123522239 has 2 divisors, whose sum is σ = 123522240. Its totient is φ = 123522238.

The previous prime is 123522199. The next prime is 123522241. The reversal of 123522239 is 932225321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123522239 is a prime.

Together with 123522241, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123521239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61761119 + 61761120.

It is an arithmetic number, because the mean of its divisors is an integer number (61761120).

Almost surely, 2^123522239 is an apocalyptic number.

123522239 is a deficient number, since it is larger than the sum of its proper divisors (1).

123522239 is an equidigital number, since it uses as much as digits as its factorization.

123522239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 29.

The square root of 123522239 is about 11114.0559203200. The cubic root of 123522239 is about 498.0218360559.

The spelling of 123522239 in words is "one hundred twenty-three million, five hundred twenty-two thousand, two hundred thirty-nine".