42222906 has 24 divisors (see below), whose sum is σ = 99800064. Its totient is φ = 12794760.

The previous prime is 42222889. The next prime is 42222913. The reversal of 42222906 is 60922224.

It is a self number, because there is not a number n which added to its sum of digits gives 42222906.

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, 106426 + ... + 106821.

It is an arithmetic number, because the mean of its divisors is an integer number (4158336).

Almost surely, 2^42222906 is an apocalyptic number.

42222906 is an abundant number, since it is smaller than the sum of its proper divisors (57577158).

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

42222906 is a wasteful number, since it uses less digits than its factorization.

42222906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213266 (or 213263 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 42222906 is about 6497.9155119161. The cubic root of 42222906 is about 348.2165220121.

The spelling of 42222906 in words is "forty-two million, two hundred twenty-two thousand, nine hundred six".