22742179 has 4 divisors (see below), whose sum is σ = 22861440. Its totient is φ = 22622920.

The previous prime is 22742149. The next prime is 22742191. The reversal of 22742179 is 97124722.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22742179 - 2¹⁵ = 22709411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22742149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59344 + ... + 59725.

It is an arithmetic number, because the mean of its divisors is an integer number (5715360).

Almost surely, 2^22742179 is an apocalyptic number.

22742179 is a deficient number, since it is larger than the sum of its proper divisors (119261).

22742179 is a wasteful number, since it uses less digits than its factorization.

22742179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119260.

The product of its digits is 14112, while the sum is 34.

The square root of 22742179 is about 4768.8760730386. The cubic root of 22742179 is about 283.3200813487.

The spelling of 22742179 in words is "twenty-two million, seven hundred forty-two thousand, one hundred seventy-nine".