122456239 has 2 divisors, whose sum is σ = 122456240. Its totient is φ = 122456238.

The previous prime is 122456233. The next prime is 122456251. The reversal of 122456239 is 932654221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122456239 - 2⁷ = 122456111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122456233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61228119 + 61228120.

It is an arithmetic number, because the mean of its divisors is an integer number (61228120).

Almost surely, 2^122456239 is an apocalyptic number.

122456239 is a deficient number, since it is larger than the sum of its proper divisors (1).

122456239 is an equidigital number, since it uses as much as digits as its factorization.

122456239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 34.

The square root of 122456239 is about 11065.9947135357. The cubic root of 122456239 is about 496.5850479717.

The spelling of 122456239 in words is "one hundred twenty-two million, four hundred fifty-six thousand, two hundred thirty-nine".