420124125531 has 48 divisors (see below), whose sum is σ = 631057480704. Its totient is φ = 248284080000.

The previous prime is 420124125517. The next prime is 420124125541. The reversal of 420124125531 is 135521421024.

It is not a de Polignac number, because 420124125531 - 2¹¹ = 420124123483 is a prime.

It is a super-2 number, since 2×420124125531² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420124125541) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34983930 + ... + 34995936.

It is an arithmetic number, because the mean of its divisors is an integer number (13147030848).

Almost surely, 2^420124125531 is an apocalyptic number.

420124125531 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

420124125531 is a deficient number, since it is larger than the sum of its proper divisors (210933355173).

420124125531 is a wasteful number, since it uses less digits than its factorization.

420124125531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14424 (or 14413 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 420124125531 its reverse (135521421024), we get a palindrome (555645546555).

The spelling of 420124125531 in words is "four hundred twenty billion, one hundred twenty-four million, one hundred twenty-five thousand, five hundred thirty-one".