42185688 has 32 divisors (see below), whose sum is σ = 106557360. Its totient is φ = 13916160.

The previous prime is 42185669. The next prime is 42185701. The reversal of 42185688 is 88658124.

42185688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6733 + ... + 11388.

Almost surely, 2^42185688 is an apocalyptic number.

It is an amenable number.

42185688 is an abundant number, since it is smaller than the sum of its proper divisors (64371672).

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

42185688 is a wasteful number, since it uses less digits than its factorization.

42185688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18227 (or 18223 counting only the distinct ones).

The product of its digits is 122880, while the sum is 42.

The square root of 42185688 is about 6495.0510390604. The cubic root of 42185688 is about 348.1141784147.

The spelling of 42185688 in words is "forty-two million, one hundred eighty-five thousand, six hundred eighty-eight".