42990608 has 10 divisors (see below), whose sum is σ = 83294334. Its totient is φ = 21495296.

The previous prime is 42990599. The next prime is 42990631. The reversal of 42990608 is 80609924.

42990608 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 37552384 + 5438224 = 6128^2 + 2332^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1343441 + ... + 1343472.

Almost surely, 2^42990608 is an apocalyptic number.

It is an amenable number.

42990608 is a deficient number, since it is larger than the sum of its proper divisors (40303726).

42990608 is a wasteful number, since it uses less digits than its factorization.

42990608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686921 (or 2686915 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 42990608 is about 6556.7223519072. The cubic root of 42990608 is about 350.3142972709.

The spelling of 42990608 in words is "forty-two million, nine hundred ninety thousand, six hundred eight".