42909384 has 32 divisors (see below), whose sum is σ = 122598720. Its totient is φ = 12259776.

The previous prime is 42909379. The next prime is 42909397. The reversal of 42909384 is 48390924.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127539 + ... + 127874.

It is an arithmetic number, because the mean of its divisors is an integer number (3831210).

Almost surely, 2^42909384 is an apocalyptic number.

It is an amenable number.

42909384 is an abundant number, since it is smaller than the sum of its proper divisors (79689336).

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

42909384 is a wasteful number, since it uses less digits than its factorization.

42909384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255429 (or 255425 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 42909384 is about 6550.5254751050. The cubic root of 42909384 is about 350.0935369050.

The spelling of 42909384 in words is "forty-two million, nine hundred nine thousand, three hundred eighty-four".