42220444 has 24 divisors (see below), whose sum is σ = 85514240. Its totient is φ = 17864496.

The previous prime is 42220393. The next prime is 42220463. The reversal of 42220444 is 44402224.

It is a congruent number.

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, 7332 + ... + 11755.

Almost surely, 2^42220444 is an apocalyptic number.

It is an amenable number.

42220444 is an abundant number, since it is smaller than the sum of its proper divisors (43293796).

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

42220444 is a wasteful number, since it uses less digits than its factorization.

42220444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19177 (or 19175 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 42220444 is about 6497.7260637857. The cubic root of 42220444 is about 348.2097537606.

Adding to 42220444 its reverse (44402224), we get a palindrome (86622668).

The spelling of 42220444 in words is "forty-two million, two hundred twenty thousand, four hundred forty-four".