122685198 has 8 divisors (see below), whose sum is σ = 245370408. Its totient is φ = 40895064.

The previous prime is 122685191. The next prime is 122685203. The reversal of 122685198 is 891586221.

It is a happy number.

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

122685198 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122685191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10223761 + ... + 10223772.

It is an arithmetic number, because the mean of its divisors is an integer number (30671301).

Almost surely, 2^122685198 is an apocalyptic number.

122685198 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

122685198 is a wasteful number, since it uses less digits than its factorization.

122685198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20447538.

The product of its digits is 69120, while the sum is 42.

The square root of 122685198 is about 11076.3350436866. The cubic root of 122685198 is about 496.8943471126.

The spelling of 122685198 in words is "one hundred twenty-two million, six hundred eighty-five thousand, one hundred ninety-eight".