22144142 has 8 divisors (see below), whose sum is σ = 33843096. Its totient is φ = 10863112.

The previous prime is 22144117. The next prime is 22144169. The reversal of 22144142 is 24144122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 104348 + ... + 104559.

It is an arithmetic number, because the mean of its divisors is an integer number (4230387).

Almost surely, 2^22144142 is an apocalyptic number.

22144142 is a deficient number, since it is larger than the sum of its proper divisors (11698954).

22144142 is a wasteful number, since it uses less digits than its factorization.

22144142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208962.

The product of its digits is 512, while the sum is 20.

The square root of 22144142 is about 4705.7562622813. The cubic root of 22144142 is about 280.8145583126.

Subtracting from 22144142 its sum of digits (20), we obtain a palindrome (22144122).

Adding to 22144142 its reverse (24144122), we get a palindrome (46288264).

The spelling of 22144142 in words is "twenty-two million, one hundred forty-four thousand, one hundred forty-two".