122428318 has 4 divisors (see below), whose sum is σ = 183642480. Its totient is φ = 61214158.

The previous prime is 122428309. The next prime is 122428321. The reversal of 122428318 is 813824221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 122428318.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30607078 + ... + 30607081.

It is an arithmetic number, because the mean of its divisors is an integer number (45910620).

Almost surely, 2^122428318 is an apocalyptic number.

122428318 is a deficient number, since it is larger than the sum of its proper divisors (61214162).

122428318 is an equidigital number, since it uses as much as digits as its factorization.

122428318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61214161.

The product of its digits is 6144, while the sum is 31.

The square root of 122428318 is about 11064.7330740511. The cubic root of 122428318 is about 496.5473033179.

The spelling of 122428318 in words is "one hundred twenty-two million, four hundred twenty-eight thousand, three hundred eighteen".