# SageMath code for working with number field 42.0.1236405605609949863710440275882328463150065157474288679507165498832965910232619214817863.1

# Some of these functions may take a long time to execute (this depends on the field).

# Define the number field: 
x = polygen(QQ);  K.<a> = NumberField(x^42 + 6*x^40 - 4*x^39 - 207*x^38 - 72*x^37 - 857*x^36 + 225*x^35 + 13524*x^34 + 4498*x^33 + 47646*x^32 - 1779*x^31 - 319728*x^30 + 56511*x^29 - 873558*x^28 + 1268358*x^27 + 3182931*x^26 - 287550*x^25 + 12585242*x^24 - 25238916*x^23 + 37767705*x^22 + 35532417*x^21 + 14671665*x^20 + 387146580*x^19 - 33604015*x^18 + 83426931*x^17 + 893018691*x^16 - 978644267*x^15 + 2536898589*x^14 + 320653281*x^13 + 1627927205*x^12 + 1198131426*x^11 - 1595121042*x^10 - 2227675498*x^9 - 1701355491*x^8 - 2415610293*x^7 - 905477771*x^6 + 53305794*x^5 + 1490523864*x^4 + 2070850257*x^3 + 1799361396*x^2 + 662562267*x + 198529417)

# Defining polynomial: 
K.defining_polynomial()

# Degree over Q: 
K.degree()

# Signature: 
K.signature()

# Discriminant: 
K.disc()

# Ramified primes: 
K.disc().support()

# Autmorphisms: 
K.automorphisms()

# Integral basis: 
K.integral_basis()

# Class group: 
K.class_group().invariants()

# Unit group: 
UK = K.unit_group()

# Unit rank: 
UK.rank()

# Generator for roots of unity: 
UK.torsion_generator()

# Fundamental units: 
UK.fundamental_units()

# Regulator: 
K.regulator()

# Analytic class number formula: 
# self-contained SageMath code snippet to compute the analytic class number formula
x = polygen(QQ);  K.<a> = NumberField(x^42 + 6*x^40 - 4*x^39 - 207*x^38 - 72*x^37 - 857*x^36 + 225*x^35 + 13524*x^34 + 4498*x^33 + 47646*x^32 - 1779*x^31 - 319728*x^30 + 56511*x^29 - 873558*x^28 + 1268358*x^27 + 3182931*x^26 - 287550*x^25 + 12585242*x^24 - 25238916*x^23 + 37767705*x^22 + 35532417*x^21 + 14671665*x^20 + 387146580*x^19 - 33604015*x^18 + 83426931*x^17 + 893018691*x^16 - 978644267*x^15 + 2536898589*x^14 + 320653281*x^13 + 1627927205*x^12 + 1198131426*x^11 - 1595121042*x^10 - 2227675498*x^9 - 1701355491*x^8 - 2415610293*x^7 - 905477771*x^6 + 53305794*x^5 + 1490523864*x^4 + 2070850257*x^3 + 1799361396*x^2 + 662562267*x + 198529417)
DK = K.disc(); r1,r2 = K.signature(); RK = K.regulator();  RR = RK.parent()
hK = K.class_number(); wK = K.unit_group().torsion_generator().order();
2^r1 * (2*RR(pi))^r2 * RK * hK / (wK * RR(sqrt(abs(DK))))  

# Intermediate fields: 
K.subfields()[1:-1]

# Galois group: 
K.galois_group(type='pari')

# Frobenius cycle types: 
# to obtain a list of $[e_i,f_i]$ for the factorization of the ideal $p\mathcal{O}_K$ for $p=7$ in Sage:
p = 7; [(e, pr.norm().valuation(p)) for pr,e in K.factor(p)]