42826538 has 24 divisors (see below), whose sum is σ = 67761828. Its totient is φ = 20284992.

The previous prime is 42826523. The next prime is 42826543. The reversal of 42826538 is 83562824.

It can be written as a sum of positive squares in 2 ways, for example, as 42159049 + 667489 = 6493^2 + 817^2 .

It is a super-2 number, since 2×42826538² = 3668224714130888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136670 + ... + 136982.

Almost surely, 2^42826538 is an apocalyptic number.

42826538 is a deficient number, since it is larger than the sum of its proper divisors (24935290).

42826538 is a wasteful number, since it uses less digits than its factorization.

42826538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438 (or 395 counting only the distinct ones).

The product of its digits is 92160, while the sum is 38.

The square root of 42826538 is about 6544.1988050486. The cubic root of 42826538 is about 349.8680808966.

The spelling of 42826538 in words is "forty-two million, eight hundred twenty-six thousand, five hundred thirty-eight".