42565688 has 64 divisors (see below), whose sum is σ = 94802400. Its totient is φ = 17694720.

The previous prime is 42565673. The next prime is 42565693. The reversal of 42565688 is 88656524.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent 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, 54968 + ... + 55736.

Almost surely, 2^42565688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42565688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47401200).

42565688 is an abundant number, since it is smaller than the sum of its proper divisors (52236712).

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

42565688 is a wasteful number, since it uses less digits than its factorization.

42565688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840 (or 836 counting only the distinct ones).

The product of its digits is 460800, while the sum is 44.

The square root of 42565688 is about 6524.2384996258. The cubic root of 42565688 is about 349.1563025412.

The spelling of 42565688 in words is "forty-two million, five hundred sixty-five thousand, six hundred eighty-eight".