72042604 has 18 divisors (see below), whose sum is σ = 133061964. Its totient is φ = 34124760.

The previous prime is 72042557. The next prime is 72042613. The reversal of 72042604 is 40624027.

It is a super-2 number, since 2×72042604² = 10380273582201632, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23502 + ... + 26389.

Almost surely, 2^72042604 is an apocalyptic number.

It is an amenable number.

72042604 is a deficient number, since it is larger than the sum of its proper divisors (61019360).

72042604 is a wasteful number, since it uses less digits than its factorization.

72042604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49933 (or 49912 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 72042604 is about 8487.7914677494. The cubic root of 72042604 is about 416.0988038858.

The spelling of 72042604 in words is "seventy-two million, forty-two thousand, six hundred four".