42981924 has 12 divisors (see below), whose sum is σ = 100291184. Its totient is φ = 14327304.

The previous prime is 42981919. The next prime is 42981929. The reversal of 42981924 is 42918924.

42981924 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42981919) and next prime (42981929).

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) 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 (42981929) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1790902 + ... + 1790925.

Almost surely, 2^42981924 is an apocalyptic number.

It is an amenable number.

42981924 is an abundant number, since it is smaller than the sum of its proper divisors (57309260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42981924 is a wasteful number, since it uses less digits than its factorization.

42981924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3581834 (or 3581832 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 42981924 is about 6556.0600973451. The cubic root of 42981924 is about 350.2907081324.

The spelling of 42981924 in words is "forty-two million, nine hundred eighty-one thousand, nine hundred twenty-four".