72142384 has 40 divisors (see below), whose sum is σ = 143048880. Its totient is φ = 35236608.

The previous prime is 72142379. The next prime is 72142393. The reversal of 72142384 is 48324127.

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 7 ways as a sum of consecutive naturals, for example, 185262 + ... + 185650.

It is an arithmetic number, because the mean of its divisors is an integer number (3576222).

Almost surely, 2^72142384 is an apocalyptic number.

It is an amenable number.

72142384 is a deficient number, since it is larger than the sum of its proper divisors (70906496).

72142384 is a wasteful number, since it uses less digits than its factorization.

72142384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637 (or 631 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 72142384 is about 8493.6672880447. The cubic root of 72142384 is about 416.2908161270.

The spelling of 72142384 in words is "seventy-two million, one hundred forty-two thousand, three hundred eighty-four".