122347279 has 2 divisors, whose sum is σ = 122347280. Its totient is φ = 122347278.

The previous prime is 122347237. The next prime is 122347301. The reversal of 122347279 is 972743221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122347279 - 2⁹ = 122346767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122347579) 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, 61173639 + 61173640.

It is an arithmetic number, because the mean of its divisors is an integer number (61173640).

Almost surely, 2^122347279 is an apocalyptic number.

122347279 is a deficient number, since it is larger than the sum of its proper divisors (1).

122347279 is an equidigital number, since it uses as much as digits as its factorization.

122347279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 37.

The square root of 122347279 is about 11061.0704274044. The cubic root of 122347279 is about 496.4377192515.

The spelling of 122347279 in words is "one hundred twenty-two million, three hundred forty-seven thousand, two hundred seventy-nine".