42568686 has 16 divisors (see below), whose sum is σ = 94597200. Its totient is φ = 14189544.

The previous prime is 42568679. The next prime is 42568711. The reversal of 42568686 is 68686524.

42568686 is a `hidden beast` number, since 4 + 2 + 568 + 6 + 86 = 666.

It is a Curzon number.

It is a congruent number.

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, 394101 + ... + 394208.

It is an arithmetic number, because the mean of its divisors is an integer number (5912325).

Almost surely, 2^42568686 is an apocalyptic number.

42568686 is an abundant number, since it is smaller than the sum of its proper divisors (52028514).

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

42568686 is a wasteful number, since it uses less digits than its factorization.

42568686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788320 (or 788314 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 42568686 is about 6524.4682541951. The cubic root of 42568686 is about 349.1644996445.

The spelling of 42568686 in words is "forty-two million, five hundred sixty-eight thousand, six hundred eighty-six".