42158566 has 8 divisors (see below), whose sum is σ = 63351864. Its totient is φ = 21041280.

The previous prime is 42158531. The next prime is 42158579. The reversal of 42158566 is 66585124.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17595 + ... + 19846.

It is an arithmetic number, because the mean of its divisors is an integer number (7918983).

Almost surely, 2^42158566 is an apocalyptic number.

42158566 is a deficient number, since it is larger than the sum of its proper divisors (21193298).

42158566 is a wasteful number, since it uses less digits than its factorization.

42158566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38006.

The product of its digits is 57600, while the sum is 37.

The square root of 42158566 is about 6492.9628059923. The cubic root of 42158566 is about 348.0395592938.

It can be divided in two parts, 42158 and 566, that added together give a palindrome (42724).

The spelling of 42158566 in words is "forty-two million, one hundred fifty-eight thousand, five hundred sixty-six".