22142242 has 8 divisors (see below), whose sum is σ = 33613776. Its totient is φ = 10937652.

The previous prime is 22142231. The next prime is 22142257. The reversal of 22142242 is 24224122.

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

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, 66528 + ... + 66859.

It is an arithmetic number, because the mean of its divisors is an integer number (4201722).

Almost surely, 2^22142242 is an apocalyptic number.

22142242 is a deficient number, since it is larger than the sum of its proper divisors (11471534).

22142242 is a wasteful number, since it uses less digits than its factorization.

22142242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133472.

The product of its digits is 512, while the sum is 19.

The square root of 22142242 is about 4705.5543775415. The cubic root of 22142242 is about 280.8065266487.

Adding to 22142242 its reverse (24224122), we get a palindrome (46366364).

The spelling of 22142242 in words is "twenty-two million, one hundred forty-two thousand, two hundred forty-two".