122815602 has 96 divisors (see below), whose sum is σ = 339760512. Its totient is φ = 32379264.

The previous prime is 122815597. The next prime is 122815603. The reversal of 122815602 is 206518221.

It is a happy number.

122815602 is a `hidden beast` number, since 1 + 22 + 81 + 560 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (122815603) 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 47 ways as a sum of consecutive naturals, for example, 42838 + ... + 45614.

It is an arithmetic number, because the mean of its divisors is an integer number (3539172).

Almost surely, 2^122815602 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122815602, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169880256).

122815602 is an abundant number, since it is smaller than the sum of its proper divisors (216944910).

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

122815602 is a wasteful number, since it uses less digits than its factorization.

122815602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2814 (or 2802 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 122815602 is about 11082.2200844416. The cubic root of 122815602 is about 497.0703370096.

The spelling of 122815602 in words is "one hundred twenty-two million, eight hundred fifteen thousand, six hundred two".