42566694 has 8 divisors (see below), whose sum is σ = 85133400. Its totient is φ = 14188896.

The previous prime is 42566681. The next prime is 42566731. The reversal of 42566694 is 49666524.

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

42566694 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 3547219 + ... + 3547230.

It is an arithmetic number, because the mean of its divisors is an integer number (10641675).

Almost surely, 2^42566694 is an apocalyptic number.

42566694 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42566694 is a wasteful number, since it uses less digits than its factorization.

42566694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7094454.

The product of its digits is 311040, while the sum is 42.

The square root of 42566694 is about 6524.3155962905. The cubic root of 42566694 is about 349.1590531798.

The spelling of 42566694 in words is "forty-two million, five hundred sixty-six thousand, six hundred ninety-four".