22742443 has 2 divisors, whose sum is σ = 22742444. Its totient is φ = 22742442.

The previous prime is 22742393. The next prime is 22742453. The reversal of 22742443 is 34424722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22742443 - 2⁹ = 22741931 is a prime.

It is not a weakly prime, because it can be changed into another prime (22742453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11371221 + 11371222.

It is an arithmetic number, because the mean of its divisors is an integer number (11371222).

Almost surely, 2^22742443 is an apocalyptic number.

22742443 is a deficient number, since it is larger than the sum of its proper divisors (1).

22742443 is an equidigital number, since it uses as much as digits as its factorization.

22742443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 28.

The square root of 22742443 is about 4768.9037524362. The cubic root of 22742443 is about 283.3211776407.

The spelling of 22742443 in words is "twenty-two million, seven hundred forty-two thousand, four hundred forty-three".