125129724 has 24 divisors (see below), whose sum is σ = 309144528. Its totient is φ = 39256320.

The previous prime is 125129723. The next prime is 125129731. The reversal of 125129724 is 427921521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125129723) 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, 306487 + ... + 306894.

It is an arithmetic number, because the mean of its divisors is an integer number (12881022).

Almost surely, 2^125129724 is an apocalyptic number.

It is an amenable number.

125129724 is an abundant number, since it is smaller than the sum of its proper divisors (184014804).

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

125129724 is a wasteful number, since it uses less digits than its factorization.

125129724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613405 (or 613403 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 125129724 is about 11186.1398167554. The cubic root of 125129724 is about 500.1729055338.

The spelling of 125129724 in words is "one hundred twenty-five million, one hundred twenty-nine thousand, seven hundred twenty-four".