122715239 has 2 divisors, whose sum is σ = 122715240. Its totient is φ = 122715238.

The previous prime is 122715227. The next prime is 122715283. The reversal of 122715239 is 932517221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122715239 - 2¹² = 122711143 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122715209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61357619 + 61357620.

It is an arithmetic number, because the mean of its divisors is an integer number (61357620).

Almost surely, 2^122715239 is an apocalyptic number.

122715239 is a deficient number, since it is larger than the sum of its proper divisors (1).

122715239 is an equidigital number, since it uses as much as digits as its factorization.

122715239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 32.

The square root of 122715239 is about 11077.6910500338. The cubic root of 122715239 is about 496.9349007277.

The spelling of 122715239 in words is "one hundred twenty-two million, seven hundred fifteen thousand, two hundred thirty-nine".