122918136 has 64 divisors (see below), whose sum is σ = 336286080. Its totient is φ = 37130880.

The previous prime is 122918119. The next prime is 122918161. The reversal of 122918136 is 631819221.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 122918097 and 122918106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122790 + ... + 123786.

It is an arithmetic number, because the mean of its divisors is an integer number (5254470).

Almost surely, 2^122918136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122918136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168143040).

122918136 is an abundant number, since it is smaller than the sum of its proper divisors (213367944).

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

122918136 is a wasteful number, since it uses less digits than its factorization.

122918136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484 (or 1480 counting only the distinct ones).

The product of its digits is 5184, while the sum is 33.

The square root of 122918136 is about 11086.8451779575. The cubic root of 122918136 is about 497.2086268043.

The spelling of 122918136 in words is "one hundred twenty-two million, nine hundred eighteen thousand, one hundred thirty-six".