22123442 has 16 divisors (see below), whose sum is σ = 36612000. Its totient is φ = 9942240.

The previous prime is 22123421. The next prime is 22123481. The reversal of 22123442 is 24432122.

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, 3692 + ... + 7607.

It is an arithmetic number, because the mean of its divisors is an integer number (2288250).

Almost surely, 2^22123442 is an apocalyptic number.

22123442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22123442 is a deficient number, since it is larger than the sum of its proper divisors (14488558).

22123442 is a wasteful number, since it uses less digits than its factorization.

22123442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11401.

The product of its digits is 768, while the sum is 20.

The square root of 22123442 is about 4703.5563141096. The cubic root of 22123442 is about 280.7270306713.

Adding to 22123442 its reverse (24432122), we get a palindrome (46555564).

The spelling of 22123442 in words is "twenty-two million, one hundred twenty-three thousand, four hundred forty-two".