125139402 has 24 divisors (see below), whose sum is σ = 278464836. Its totient is φ = 40585536.

The previous prime is 125139401. The next prime is 125139419. The reversal of 125139402 is 204931521.

125139402 is a `hidden beast` number, since 1 + 251 + 3 + 9 + 402 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 122080401 + 3059001 = 11049^2 + 1749^2 .

It is not an unprimeable number, because it can be changed into a prime (125139401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93283 + ... + 94614.

Almost surely, 2^125139402 is an apocalyptic number.

125139402 is an abundant number, since it is smaller than the sum of its proper divisors (153325434).

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

125139402 is a wasteful number, since it uses less digits than its factorization.

125139402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187942 (or 187939 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 125139402 is about 11186.5723972985. The cubic root of 125139402 is about 500.1858002813.

The spelling of 125139402 in words is "one hundred twenty-five million, one hundred thirty-nine thousand, four hundred two".