42224172 has 24 divisors (see below), whose sum is σ = 99132096. Its totient is φ = 13987728.

The previous prime is 42224167. The next prime is 42224183. The reversal of 42224172 is 27142224.

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, 8838 + ... + 12749.

It is an arithmetic number, because the mean of its divisors is an integer number (4130504).

Almost surely, 2^42224172 is an apocalyptic number.

It is an amenable number.

42224172 is an abundant number, since it is smaller than the sum of its proper divisors (56907924).

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

42224172 is a wasteful number, since it uses less digits than its factorization.

42224172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21757 (or 21755 counting only the distinct ones).

The product of its digits is 1792, while the sum is 24.

The square root of 42224172 is about 6498.0129270416. The cubic root of 42224172 is about 348.2200022535.

Adding to 42224172 its reverse (27142224), we get a palindrome (69366396).

The spelling of 42224172 in words is "forty-two million, two hundred twenty-four thousand, one hundred seventy-two".