72126524 has 12 divisors (see below), whose sum is σ = 127471848. Its totient is φ = 35706000.

The previous prime is 72126517. The next prime is 72126533. The reversal of 72126524 is 42562127.

It is a happy number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

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, 88862 + ... + 89669.

It is an arithmetic number, because the mean of its divisors is an integer number (10622654).

Almost surely, 2^72126524 is an apocalyptic number.

It is an amenable number.

72126524 is a deficient number, since it is larger than the sum of its proper divisors (55345324).

72126524 is a wasteful number, since it uses less digits than its factorization.

72126524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178636 (or 178634 counting only the distinct ones).

The product of its digits is 6720, while the sum is 29.

The square root of 72126524 is about 8492.7335999665. The cubic root of 72126524 is about 416.2603076803.

The spelling of 72126524 in words is "seventy-two million, one hundred twenty-six thousand, five hundred twenty-four".