125139072 has 32 divisors (see below), whose sum is σ = 332401680. Its totient is φ = 41712896.

The previous prime is 125139061. The next prime is 125139097. The reversal of 125139072 is 270931521.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162558 + ... + 163325.

Almost surely, 2^125139072 is an apocalyptic number.

125139072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

125139072 is an abundant number, since it is smaller than the sum of its proper divisors (207262608).

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

125139072 is an equidigital number, since it uses as much as digits as its factorization.

125139072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325900 (or 325888 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 125139072 is about 11186.5576474624. The cubic root of 125139072 is about 500.1853606077.

The spelling of 125139072 in words is "one hundred twenty-five million, one hundred thirty-nine thousand, seventy-two".