122978718 has 12 divisors (see below), whose sum is σ = 266453928. Its totient is φ = 40992900.

The previous prime is 122978707. The next prime is 122978719. The reversal of 122978718 is 817879221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122978719) 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 5 ways as a sum of consecutive naturals, for example, 3416058 + ... + 3416093.

It is an arithmetic number, because the mean of its divisors is an integer number (22204494).

Almost surely, 2^122978718 is an apocalyptic number.

122978718 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

122978718 is an abundant number, since it is smaller than the sum of its proper divisors (143475210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122978718 is a wasteful number, since it uses less digits than its factorization.

122978718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6832159 (or 6832156 counting only the distinct ones).

The product of its digits is 112896, while the sum is 45.

The square root of 122978718 is about 11089.5769982448. The cubic root of 122978718 is about 497.2902989011.

The spelling of 122978718 in words is "one hundred twenty-two million, nine hundred seventy-eight thousand, seven hundred eighteen".