42666044 has 24 divisors (see below), whose sum is σ = 77540736. Its totient is φ = 20520000.

The previous prime is 42665957. The next prime is 42666053. The reversal of 42666044 is 44066624.

It is a self number, because there is not a number n which added to its sum of digits gives 42666044.

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, 21494 + ... + 23394.

It is an arithmetic number, because the mean of its divisors is an integer number (3230864).

Almost surely, 2^42666044 is an apocalyptic number.

It is an amenable number.

42666044 is a deficient number, since it is larger than the sum of its proper divisors (34874692).

42666044 is a wasteful number, since it uses less digits than its factorization.

42666044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2117 (or 2115 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 42666044 is about 6531.9249842600. The cubic root of 42666044 is about 349.4304860443.

The spelling of 42666044 in words is "forty-two million, six hundred sixty-six thousand, forty-four".