42538868 has 24 divisors (see below), whose sum is σ = 79493568. Its totient is φ = 19869696.

The previous prime is 42538861. The next prime is 42538871. The reversal of 42538868 is 86883524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42538861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1421 + ... + 9332.

It is an arithmetic number, because the mean of its divisors is an integer number (3312232).

Almost surely, 2^42538868 is an apocalyptic number.

It is an amenable number.

42538868 is a deficient number, since it is larger than the sum of its proper divisors (36954700).

42538868 is a wasteful number, since it uses less digits than its factorization.

42538868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10823 (or 10821 counting only the distinct ones).

The product of its digits is 368640, while the sum is 44.

The square root of 42538868 is about 6522.1827634619. The cubic root of 42538868 is about 349.0829544217.

It can be divided in two parts, 425 and 38868, that added together give a palindrome (39293).

The spelling of 42538868 in words is "forty-two million, five hundred thirty-eight thousand, eight hundred sixty-eight".