42744904 has 8 divisors (see below), whose sum is σ = 80146710. Its totient is φ = 21372448.

The previous prime is 42744899. The next prime is 42744913. The reversal of 42744904 is 40944724.

It can be written as a sum of positive squares in only one way, i.e., 26728900 + 16016004 = 5170^2 + 4002^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 42744904.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2671549 + ... + 2671564.

Almost surely, 2^42744904 is an apocalyptic number.

It is an amenable number.

42744904 is a deficient number, since it is larger than the sum of its proper divisors (37401806).

42744904 is a wasteful number, since it uses less digits than its factorization.

42744904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5343119 (or 5343115 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 42744904 is about 6537.9587028368. The cubic root of 42744904 is about 349.6456386229.

The spelling of 42744904 in words is "forty-two million, seven hundred forty-four thousand, nine hundred four".