122880917 has 16 divisors (see below), whose sum is σ = 129515760. Its totient is φ = 116433408.

The previous prime is 122880899. The next prime is 122880937. The reversal of 122880917 is 719088221.

It can be written as a sum of positive squares in 8 ways, for example, as 8797156 + 114083761 = 2966^2 + 10681^2 .

It is a cyclic number.

It is not a de Polignac number, because 122880917 - 2⁸ = 122880661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122880937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 623663 + ... + 623859.

It is an arithmetic number, because the mean of its divisors is an integer number (8094735).

Almost surely, 2^122880917 is an apocalyptic number.

It is an amenable number.

122880917 is a deficient number, since it is larger than the sum of its proper divisors (6634843).

122880917 is a wasteful number, since it uses less digits than its factorization.

122880917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 122880917 is about 11085.1665300978. The cubic root of 122880917 is about 497.1584376389.

The spelling of 122880917 in words is "one hundred twenty-two million, eight hundred eighty thousand, nine hundred seventeen".