122744239 has 2 divisors, whose sum is σ = 122744240. Its totient is φ = 122744238.

The previous prime is 122744203. The next prime is 122744257. The reversal of 122744239 is 932447221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122744239 - 2¹⁵ = 122711471 is a prime.

It is a super-2 number, since 2×122744239² = 30132296415378242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122744339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61372119 + 61372120.

It is an arithmetic number, because the mean of its divisors is an integer number (61372120).

Almost surely, 2^122744239 is an apocalyptic number.

122744239 is a deficient number, since it is larger than the sum of its proper divisors (1).

122744239 is an equidigital number, since it uses as much as digits as its factorization.

122744239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 34.

The square root of 122744239 is about 11078.9999097391. Note that the first 4 decimals coincide. The cubic root of 122744239 is about 496.9740427750.

The spelling of 122744239 in words is "one hundred twenty-two million, seven hundred forty-four thousand, two hundred thirty-nine".