139312524 has 24 divisors (see below), whose sum is σ = 350067760. Its totient is φ = 42865344.

The previous prime is 139312507. The next prime is 139312529. The reversal of 139312524 is 425213931.

139312524 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 139312491 and 139312500.

It is not an unprimeable number, because it can be changed into a prime (139312529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 446359 + ... + 446670.

Almost surely, 2^139312524 is an apocalyptic number.

It is an amenable number.

139312524 is an abundant number, since it is smaller than the sum of its proper divisors (210755236).

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

139312524 is a wasteful number, since it uses less digits than its factorization.

139312524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893049 (or 893047 counting only the distinct ones).

The product of its digits is 6480, while the sum is 30.

The square root of 139312524 is about 11803.0726507973. The cubic root of 139312524 is about 518.3980830071.

The spelling of 139312524 in words is "one hundred thirty-nine million, three hundred twelve thousand, five hundred twenty-four".