72179042 has 32 divisors (see below), whose sum is σ = 125202672. Its totient is φ = 30910464.

The previous prime is 72179021. The next prime is 72179047. The reversal of 72179042 is 24097127.

It can be written as a sum of positive squares in 8 ways, for example, as 46362481 + 25816561 = 6809^2 + 5081^2 .

It is not an unprimeable number, because it can be changed into a prime (72179047) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 31148 + ... + 33384.

Almost surely, 2^72179042 is an apocalyptic number.

72179042 is a deficient number, since it is larger than the sum of its proper divisors (53023630).

72179042 is a wasteful number, since it uses less digits than its factorization.

72179042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2342.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 72179042 is about 8495.8249746567. The cubic root of 72179042 is about 416.3613146969.

The spelling of 72179042 in words is "seventy-two million, one hundred seventy-nine thousand, forty-two".