42990884 has 12 divisors (see below), whose sum is σ = 76983984. Its totient is φ = 20995464.

The previous prime is 42990877. The next prime is 42990889. The reversal of 42990884 is 48809924.

It is a happy number.

It is a super-2 number, since 2×42990884² = 3696432214202912, which contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (42990889) 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, 124802 + ... + 125145.

It is an arithmetic number, because the mean of its divisors is an integer number (6415332).

Almost surely, 2^42990884 is an apocalyptic number.

It is an amenable number.

42990884 is a deficient number, since it is larger than the sum of its proper divisors (33993100).

42990884 is a wasteful number, since it uses less digits than its factorization.

42990884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249994 (or 249992 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 42990884 is about 6556.7433989748. The cubic root of 42990884 is about 350.3150469427.

The spelling of 42990884 in words is "forty-two million, nine hundred ninety thousand, eight hundred eighty-four".