42972088 has 16 divisors (see below), whose sum is σ = 81544680. Its totient is φ = 21226848.

The previous prime is 42972077. The next prime is 42972089. The reversal of 42972088 is 88027924.

It is a nialpdrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 42972088.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42972089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31695 + ... + 33022.

Almost surely, 2^42972088 is an apocalyptic number.

It is an amenable number.

42972088 is a deficient number, since it is larger than the sum of its proper divisors (38572592).

42972088 is a wasteful number, since it uses less digits than its factorization.

42972088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64806 (or 64802 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 42972088 is about 6555.3099087686. The cubic root of 42972088 is about 350.2639858738.

The spelling of 42972088 in words is "forty-two million, nine hundred seventy-two thousand, eighty-eight".