42238866 has 32 divisors (see below), whose sum is σ = 86546880. Its totient is φ = 13739264.

The previous prime is 42238841. The next prime is 42238871. The reversal of 42238866 is 66883224.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43846 + ... + 44798.

It is an arithmetic number, because the mean of its divisors is an integer number (2704590).

Almost surely, 2^42238866 is an apocalyptic number.

42238866 is an abundant number, since it is smaller than the sum of its proper divisors (44308014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42238866 is a wasteful number, since it uses less digits than its factorization.

42238866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130.

The product of its digits is 110592, while the sum is 39.

The square root of 42238866 is about 6499.1434820290. The cubic root of 42238866 is about 348.2603910564.

The spelling of 42238866 in words is "forty-two million, two hundred thirty-eight thousand, eight hundred sixty-six".