122999328 has 36 divisors (see below), whose sum is σ = 349780158. Its totient is φ = 40999680.

The previous prime is 122999323. The next prime is 122999333. The reversal of 122999328 is 823999221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (122999323) and next prime (122999333).

It can be written as a sum of positive squares in only one way, i.e., 106254864 + 16744464 = 10308^2 + 4092^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (122999321) 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 5 ways as a sum of consecutive naturals, for example, 213253 + ... + 213828.

Almost surely, 2^122999328 is an apocalyptic number.

122999328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

122999328 is an abundant number, since it is smaller than the sum of its proper divisors (226780830).

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

122999328 is a wasteful number, since it uses less digits than its factorization.

122999328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427097 (or 427086 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 122999328 is about 11090.5062102683. The cubic root of 122999328 is about 497.3180776386.

The spelling of 122999328 in words is "one hundred twenty-two million, nine hundred ninety-nine thousand, three hundred twenty-eight".