125139992 has 16 divisors (see below), whose sum is σ = 248439960. Its totient is φ = 58889344.

The previous prime is 125139983. The next prime is 125140021. The reversal of 125139992 is 299931521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459938 + ... + 460209.

Almost surely, 2^125139992 is an apocalyptic number.

It is an amenable number.

125139992 is a deficient number, since it is larger than the sum of its proper divisors (123299968).

125139992 is a wasteful number, since it uses less digits than its factorization.

125139992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920170 (or 920166 counting only the distinct ones).

The product of its digits is 43740, while the sum is 41.

The square root of 125139992 is about 11186.5987681690. The cubic root of 125139992 is about 500.1865863624.

The spelling of 125139992 in words is "one hundred twenty-five million, one hundred thirty-nine thousand, nine hundred ninety-two".