42755872 has 12 divisors (see below), whose sum is σ = 84175686. Its totient is φ = 21377920.

The previous prime is 42755863. The next prime is 42755879. The reversal of 42755872 is 27855724.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 37015056 + 5740816 = 6084^2 + 2396^2 .

It is not an unprimeable number, because it can be changed into a prime (42755879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 668029 + ... + 668092.

Almost surely, 2^42755872 is an apocalyptic number.

It is an amenable number.

42755872 is a deficient number, since it is larger than the sum of its proper divisors (41419814).

42755872 is a wasteful number, since it uses less digits than its factorization.

42755872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336131 (or 1336123 counting only the distinct ones).

The product of its digits is 156800, while the sum is 40.

The square root of 42755872 is about 6538.7974429554. The cubic root of 42755872 is about 349.6755414889.

The spelling of 42755872 in words is "forty-two million, seven hundred fifty-five thousand, eight hundred seventy-two".