42422842 has 48 divisors (see below), whose sum is σ = 81204480. Its totient is φ = 16267680.

The previous prime is 42422789. The next prime is 42422857. The reversal of 42422842 is 24822424.

It is a self number, because there is not a number n which added to its sum of digits gives 42422842.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133668 + ... + 133984.

It is an arithmetic number, because the mean of its divisors is an integer number (1691760).

Almost surely, 2^42422842 is an apocalyptic number.

42422842 is a deficient number, since it is larger than the sum of its proper divisors (38781638).

42422842 is a wasteful number, since it uses less digits than its factorization.

42422842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 416 counting only the distinct ones).

The product of its digits is 8192, while the sum is 28.

The square root of 42422842 is about 6513.2819684089. The cubic root of 42422842 is about 348.7652874599.

It can be divided in two parts, 42422 and 842, that added together give a square (43264 = 208²).

The spelling of 42422842 in words is "forty-two million, four hundred twenty-two thousand, eight hundred forty-two".