42931984 has 20 divisors (see below), whose sum is σ = 86798016. Its totient is φ = 20532512.

The previous prime is 42931979. The next prime is 42932003. The reversal of 42931984 is 48913924.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57964 + ... + 58699.

Almost surely, 2^42931984 is an apocalyptic number.

It is an amenable number.

42931984 is an abundant number, since it is smaller than the sum of its proper divisors (43866032).

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

42931984 is a wasteful number, since it uses less digits than its factorization.

42931984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116694 (or 116688 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The square root of 42931984 is about 6552.2503004693. The cubic root of 42931984 is about 350.1549898594.

The spelling of 42931984 in words is "forty-two million, nine hundred thirty-one thousand, nine hundred eighty-four".