420520450544031 has 64 divisors (see below), whose sum is σ = 593547178803200. Its totient is φ = 264466183766400.

The previous prime is 420520450544023. The next prime is 420520450544039. The reversal of 420520450544031 is 130445054025024.

It is an interprime number because it is at equal distance from previous prime (420520450544023) and next prime (420520450544039).

It is not a de Polignac number, because 420520450544031 - 2³ = 420520450544023 is a prime.

It is a super-2 number, since 2×420520450544031² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420520450544039) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 661795290 + ... + 662430408.

It is an arithmetic number, because the mean of its divisors is an integer number (9274174668800).

Almost surely, 2^{420520450544031} is an apocalyptic number.

420520450544031 is a deficient number, since it is larger than the sum of its proper divisors (173026728259169).

420520450544031 is a wasteful number, since it uses less digits than its factorization.

420520450544031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636260.

The product of its (nonzero) digits is 384000, while the sum is 39.

The spelling of 420520450544031 in words is "four hundred twenty trillion, five hundred twenty billion, four hundred fifty million, five hundred forty-four thousand, thirty-one".