420125131054531 has 72 divisors (see below), whose sum is σ = 507823275960000. Its totient is φ = 346541521955328.

The previous prime is 420125131054523. The next prime is 420125131054591. The reversal of 420125131054531 is 135450131521024.

It is not a de Polignac number, because 420125131054531 - 2³ = 420125131054523 is a prime.

It is a super-2 number, since 2×420125131054531² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420125131054591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 42699977910 + ... + 42699987748.

It is an arithmetic number, because the mean of its divisors is an integer number (7053101055000).

Almost surely, 2^{420125131054531} is an apocalyptic number.

420125131054531 is a deficient number, since it is larger than the sum of its proper divisors (87698144905469).

420125131054531 is a wasteful number, since it uses less digits than its factorization.

420125131054531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13229 (or 13193 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

Adding to 420125131054531 its reverse (135450131521024), we get a palindrome (555575262575555).

The spelling of 420125131054531 in words is "four hundred twenty trillion, one hundred twenty-five billion, one hundred thirty-one million, fifty-four thousand, five hundred thirty-one".