12931275042 has 48 divisors (see below), whose sum is σ = 32458957440. Its totient is φ = 3644035776.

The previous prime is 12931275041. The next prime is 12931275079. The reversal of 12931275042 is 24057213921.

12931275042 is a `hidden beast` number, since 1 + 29 + 3 + 127 + 504 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 12931274988 and 12931275006.

It is not an unprimeable number, because it can be changed into a prime (12931275041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 693742 + ... + 712137.

It is an arithmetic number, because the mean of its divisors is an integer number (676228280).

Almost surely, 2^12931275042 is an apocalyptic number.

12931275042 is an abundant number, since it is smaller than the sum of its proper divisors (19527682398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12931275042 is a wasteful number, since it uses less digits than its factorization.

12931275042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405967 (or 1405964 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

Adding to 12931275042 its reverse (24057213921), we get a palindrome (36988488963).

The spelling of 12931275042 in words is "twelve billion, nine hundred thirty-one million, two hundred seventy-five thousand, forty-two".