122718 has 16 divisors (see below), whose sum is σ = 248976. Its totient is φ = 40320.

The previous prime is 122701. The next prime is 122719. The reversal of 122718 is 817221.

It is a Curzon number.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 122694 and 122703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122719) by changing a digit.

122718 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 588 + ... + 768.

It is an arithmetic number, because the mean of its divisors is an integer number (15561).

2¹²²⁷¹⁸ is an apocalyptic number.

122718 is an abundant number, since it is smaller than the sum of its proper divisors (126258).

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

122718 is a wasteful number, since it uses less digits than its factorization.

122718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299.

The product of its digits is 224, while the sum is 21.

The square root of 122718 is about 350.3112901406. The cubic root of 122718 is about 49.6938627586.

Adding to 122718 its reverse (817221), we get a palindrome (939939).

The spelling of 122718 in words is "one hundred twenty-two thousand, seven hundred eighteen".