122878759 has 2 divisors, whose sum is σ = 122878760. Its totient is φ = 122878758.

The previous prime is 122878753. The next prime is 122878781. The reversal of 122878759 is 957878221.

It is a weak prime.

It is an emirp because it is prime and its reverse (957878221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122878759 - 2⁹ = 122878247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122878753) 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, 61439379 + 61439380.

It is an arithmetic number, because the mean of its divisors is an integer number (61439380).

Almost surely, 2^122878759 is an apocalyptic number.

122878759 is a deficient number, since it is larger than the sum of its proper divisors (1).

122878759 is an equidigital number, since it uses as much as digits as its factorization.

122878759 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 564480, while the sum is 49.

The square root of 122878759 is about 11085.0691923867. The cubic root of 122878759 is about 497.1555273031.

The spelling of 122878759 in words is "one hundred twenty-two million, eight hundred seventy-eight thousand, seven hundred fifty-nine".