42859986 has 32 divisors (see below), whose sum is σ = 94815168. Its totient is φ = 12830400.

The previous prime is 42859969. The next prime is 42860021. The reversal of 42859986 is 68995824.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4540 + ... + 10311.

It is an arithmetic number, because the mean of its divisors is an integer number (2962974).

Almost surely, 2^42859986 is an apocalyptic number.

42859986 is an abundant number, since it is smaller than the sum of its proper divisors (51955182).

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

42859986 is a wasteful number, since it uses less digits than its factorization.

42859986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14906.

The product of its digits is 1244160, while the sum is 51.

The square root of 42859986 is about 6546.7538521011. The cubic root of 42859986 is about 349.9591408085.

The spelling of 42859986 in words is "forty-two million, eight hundred fifty-nine thousand, nine hundred eighty-six".