72142858 has 32 divisors (see below), whose sum is σ = 116453376. Its totient is φ = 33441408.

The previous prime is 72142813. The next prime is 72142871. The reversal of 72142858 is 85824127.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309510 + ... + 309742.

It is an arithmetic number, because the mean of its divisors is an integer number (3639168).

Almost surely, 2^72142858 is an apocalyptic number.

72142858 is a deficient number, since it is larger than the sum of its proper divisors (44310518).

72142858 is a wasteful number, since it uses less digits than its factorization.

72142858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438.

The product of its digits is 35840, while the sum is 37.

The square root of 72142858 is about 8493.6951911403. The cubic root of 72142858 is about 416.2917278491.

The spelling of 72142858 in words is "seventy-two million, one hundred forty-two thousand, eight hundred fifty-eight".