222042144 has 24 divisors (see below), whose sum is σ = 582860880. Its totient is φ = 74014016.

The previous prime is 222042127. The next prime is 222042173. The reversal of 222042144 is 441240222.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 222042144.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1156374 + ... + 1156565.

It is an arithmetic number, because the mean of its divisors is an integer number (24285870).

Almost surely, 2^222042144 is an apocalyptic number.

222042144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

222042144 is an abundant number, since it is smaller than the sum of its proper divisors (360818736).

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

222042144 is a wasteful number, since it uses less digits than its factorization.

222042144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2312952 (or 2312944 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 222042144 is about 14901.0786186772. The cubic root of 222042144 is about 605.5432081401.

Adding to 222042144 its reverse (441240222), we get a palindrome (663282366).

The spelling of 222042144 in words is "two hundred twenty-two million, forty-two thousand, one hundred forty-four".