42388912 has 10 divisors (see below), whose sum is σ = 82128548. Its totient is φ = 21194448.

The previous prime is 42388909. The next prime is 42388919. The reversal of 42388912 is 21988324.

It is not an unprimeable number, because it can be changed into a prime (42388919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1324638 + ... + 1324669.

Almost surely, 2^42388912 is an apocalyptic number.

It is an amenable number.

42388912 is a deficient number, since it is larger than the sum of its proper divisors (39739636).

42388912 is a wasteful number, since it uses less digits than its factorization.

42388912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2649315 (or 2649309 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 42388912 is about 6510.6767697375. The cubic root of 42388912 is about 348.6722812562.

The spelling of 42388912 in words is "forty-two million, three hundred eighty-eight thousand, nine hundred twelve".