42866165 has 8 divisors (see below), whose sum is σ = 52829880. Its totient is φ = 33365952.

The previous prime is 42866137. The next prime is 42866171. The reversal of 42866165 is 56166824.

It can be written as a sum of positive squares in 4 ways, for example, as 21169201 + 21696964 = 4601^2 + 4658^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42866165 - 2⁸ = 42865909 is a prime.

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, 115670 + ... + 116039.

It is an arithmetic number, because the mean of its divisors is an integer number (6603735).

Almost surely, 2^42866165 is an apocalyptic number.

It is an amenable number.

42866165 is a deficient number, since it is larger than the sum of its proper divisors (9963715).

42866165 is a wasteful number, since it uses less digits than its factorization.

42866165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231751.

The product of its digits is 69120, while the sum is 38.

The square root of 42866165 is about 6547.2257483609. The cubic root of 42866165 is about 349.9759575322.

The spelling of 42866165 in words is "forty-two million, eight hundred sixty-six thousand, one hundred sixty-five".