42664860 has 96 divisors (see below), whose sum is σ = 151710720. Its totient is φ = 9751104.

The previous prime is 42664837. The next prime is 42664871. The reversal of 42664860 is 6846624.

It is a happy number.

42664860 is a `hidden beast` number, since 4 + 2 + 6 + 648 + 6 + 0 = 666.

It is a hoax number, since the sum of its digits (36) 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 (36).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 1864 + ... + 9423.

It is an arithmetic number, because the mean of its divisors is an integer number (1580320).

Almost surely, 2^42664860 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 42664860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75855360).

42664860 is an abundant number, since it is smaller than the sum of its proper divisors (109045860).

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

42664860 is a wasteful number, since it uses less digits than its factorization.

42664860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11312 (or 11304 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 42664860 is about 6531.8343518494. The cubic root of 42664860 is about 349.4272537352.

The spelling of 42664860 in words is "forty-two million, six hundred sixty-four thousand, eight hundred sixty".