42865790 has 32 divisors (see below), whose sum is σ = 87837696. Its totient is φ = 14908960.

The previous prime is 42865769. The next prime is 42865807. The reversal of 42865790 is 9756824.

42865790 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 15 ways as a sum of consecutive naturals, for example, 5942 + ... + 11001.

It is an arithmetic number, because the mean of its divisors is an integer number (2744928).

Almost surely, 2^42865790 is an apocalyptic number.

42865790 is an abundant number, since it is smaller than the sum of its proper divisors (44971906).

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

42865790 is a wasteful number, since it uses less digits than its factorization.

42865790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16984.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 42865790 is about 6547.1971102144. The cubic root of 42865790 is about 349.9749369808.

The spelling of 42865790 in words is "forty-two million, eight hundred sixty-five thousand, seven hundred ninety".