122816939 has 8 divisors (see below), whose sum is σ = 140767200. Its totient is φ = 104967936.

The previous prime is 122816927. The next prime is 122816957. The reversal of 122816939 is 939618221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122816939 - 2⁴ = 122816923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122816896 and 122816905.

It is not an unprimeable number, because it can be changed into a prime (122816989) 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 7 ways as a sum of consecutive naturals, for example, 22694 + ... + 27579.

It is an arithmetic number, because the mean of its divisors is an integer number (17595900).

Almost surely, 2^122816939 is an apocalyptic number.

122816939 is a deficient number, since it is larger than the sum of its proper divisors (17950261).

122816939 is an equidigital number, since it uses as much as digits as its factorization.

122816939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50629.

The product of its digits is 46656, while the sum is 41.

The square root of 122816939 is about 11082.2804061258. The cubic root of 122816939 is about 497.0721407453.

The spelling of 122816939 in words is "one hundred twenty-two million, eight hundred sixteen thousand, nine hundred thirty-nine".