22442423 has 2 divisors, whose sum is σ = 22442424. Its totient is φ = 22442422.

The previous prime is 22442393. The next prime is 22442467. The reversal of 22442423 is 32424422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22442423 - 2²⁰ = 21393847 is a prime.

It is a super-2 number, since 2×22442423² = 1007324700221858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22442473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11221211 + 11221212.

It is an arithmetic number, because the mean of its divisors is an integer number (11221212).

Almost surely, 2^22442423 is an apocalyptic number.

22442423 is a deficient number, since it is larger than the sum of its proper divisors (1).

22442423 is an equidigital number, since it uses as much as digits as its factorization.

22442423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 23.

The square root of 22442423 is about 4737.3434538779. The cubic root of 22442423 is about 282.0697939349.

Adding to 22442423 its reverse (32424422), we get a palindrome (54866845).

The spelling of 22442423 in words is "twenty-two million, four hundred forty-two thousand, four hundred twenty-three".