42365864 has 16 divisors (see below), whose sum is σ = 80224020. Its totient is φ = 20972800.

The previous prime is 42365837. The next prime is 42365867. The reversal of 42365864 is 46856324.

It can be written as a sum of positive squares in 2 ways, for example, as 34128964 + 8236900 = 5842^2 + 2870^2 .

It is not an unprimeable number, because it can be changed into a prime (42365867) 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, 25409 + ... + 27024.

Almost surely, 2^42365864 is an apocalyptic number.

It is an amenable number.

42365864 is a deficient number, since it is larger than the sum of its proper divisors (37858156).

42365864 is a wasteful number, since it uses less digits than its factorization.

42365864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52540 (or 52536 counting only the distinct ones).

The product of its digits is 138240, while the sum is 38.

The square root of 42365864 is about 6508.9065133861. The cubic root of 42365864 is about 348.6090756103.

The spelling of 42365864 in words is "forty-two million, three hundred sixty-five thousand, eight hundred sixty-four".