42865786 has 16 divisors (see below), whose sum is σ = 69125760. Its totient is φ = 19872000.

The previous prime is 42865769. The next prime is 42865807. The reversal of 42865786 is 68756824.

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, 10215 + ... + 13786.

It is an arithmetic number, because the mean of its divisors is an integer number (4320360).

Almost surely, 2^42865786 is an apocalyptic number.

42865786 is a deficient number, since it is larger than the sum of its proper divisors (26259974).

42865786 is a wasteful number, since it uses less digits than its factorization.

42865786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24069.

The product of its digits is 645120, while the sum is 46.

The square root of 42865786 is about 6547.1968047402. The cubic root of 42865786 is about 349.9749260949.

The spelling of 42865786 in words is "forty-two million, eight hundred sixty-five thousand, seven hundred eighty-six".