42220868 has 24 divisors (see below), whose sum is σ = 77134680. Its totient is φ = 20195840.

The previous prime is 42220837. The next prime is 42220903. The reversal of 42220868 is 86802224.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2050624 + 40170244 = 1432^2 + 6338^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11498 + ... + 14718.

It is an arithmetic number, because the mean of its divisors is an integer number (3213945).

Almost surely, 2^42220868 is an apocalyptic number.

It is an amenable number.

42220868 is a deficient number, since it is larger than the sum of its proper divisors (34913812).

42220868 is a wasteful number, since it uses less digits than its factorization.

42220868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3367 (or 3365 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 42220868 is about 6497.7586905024. The cubic root of 42220868 is about 348.2109193921.

The spelling of 42220868 in words is "forty-two million, two hundred twenty thousand, eight hundred sixty-eight".