42666056 has 16 divisors (see below), whose sum is σ = 84704940. Its totient is φ = 20078080.

The previous prime is 42666053. The next prime is 42666059. The reversal of 42666056 is 65066624.

It is an interprime number because it is at equal distance from previous prime (42666053) and next prime (42666059).

It can be written as a sum of positive squares in 2 ways, for example, as 32103556 + 10562500 = 5666^2 + 3250^2 .

It is not an unprimeable number, because it can be changed into a prime (42666053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156725 + ... + 156996.

Almost surely, 2^42666056 is an apocalyptic number.

It is an amenable number.

42666056 is a deficient number, since it is larger than the sum of its proper divisors (42038884).

42666056 is a wasteful number, since it uses less digits than its factorization.

42666056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313744 (or 313740 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 42666056 is about 6531.9259028253. The cubic root of 42666056 is about 349.4305188038.

The spelling of 42666056 in words is "forty-two million, six hundred sixty-six thousand, fifty-six".