42868665 has 96 divisors (see below), whose sum is σ = 90994176. Its totient is φ = 18247680.

The previous prime is 42868627. The next prime is 42868783. The reversal of 42868665 is 56686824.

It is not a de Polignac number, because 42868665 - 2¹⁰ = 42867641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 42868665.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 441897 + ... + 441993.

It is an arithmetic number, because the mean of its divisors is an integer number (947856).

Almost surely, 2^42868665 is an apocalyptic number.

42868665 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42868665 is an abundant number, since it is smaller than the sum of its proper divisors (48125511).

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

42868665 is a wasteful number, since it uses less digits than its factorization.

42868665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 196 counting only the distinct ones).

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

The square root of 42868665 is about 6547.4166661363. The cubic root of 42868665 is about 349.9827610557.

The spelling of 42868665 in words is "forty-two million, eight hundred sixty-eight thousand, six hundred sixty-five".