22742339 has 2 divisors, whose sum is σ = 22742340. Its totient is φ = 22742338.

The previous prime is 22742333. The next prime is 22742341. The reversal of 22742339 is 93324722.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22742339 - 2⁴ = 22742323 is a prime.

It is a Sophie Germain prime.

Together with 22742341, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22742333) 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 as a sum of consecutive naturals, namely, 11371169 + 11371170.

It is an arithmetic number, because the mean of its divisors is an integer number (11371170).

Almost surely, 2^22742339 is an apocalyptic number.

22742339 is a deficient number, since it is larger than the sum of its proper divisors (1).

22742339 is an equidigital number, since it uses as much as digits as its factorization.

22742339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 32.

The square root of 22742339 is about 4768.8928484503. The cubic root of 22742339 is about 283.3207457691.

The spelling of 22742339 in words is "twenty-two million, seven hundred forty-two thousand, three hundred thirty-nine".