125638442 has 16 divisors (see below), whose sum is σ = 190270080. Its totient is φ = 62218128.

The previous prime is 125638427. The next prime is 125638477. The reversal of 125638442 is 244836521.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129443 + ... + 130409.

It is an arithmetic number, because the mean of its divisors is an integer number (11891880).

Almost surely, 2^125638442 is an apocalyptic number.

125638442 is a deficient number, since it is larger than the sum of its proper divisors (64631638).

125638442 is a wasteful number, since it uses less digits than its factorization.

125638442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525.

The product of its digits is 46080, while the sum is 35.

The square root of 125638442 is about 11208.8555169562. The cubic root of 125638442 is about 500.8498108248.

The spelling of 125638442 in words is "one hundred twenty-five million, six hundred thirty-eight thousand, four hundred forty-two".