42866988 has 48 divisors (see below), whose sum is σ = 104160000. Its totient is φ = 13704768.

The previous prime is 42866977. The next prime is 42867043. The reversal of 42866988 is 88966824.

It is a happy number.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 42866988.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68943 + ... + 69561.

It is an arithmetic number, because the mean of its divisors is an integer number (2170000).

Almost surely, 2^42866988 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 42866988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52080000).

42866988 is an abundant number, since it is smaller than the sum of its proper divisors (61293012).

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

42866988 is a wasteful number, since it uses less digits than its factorization.

42866988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854 (or 852 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 51.

The square root of 42866988 is about 6547.2885991073. The cubic root of 42866988 is about 349.9781972813.

The spelling of 42866988 in words is "forty-two million, eight hundred sixty-six thousand, nine hundred eighty-eight".