122990992 has 20 divisors (see below), whose sum is σ = 241313920. Its totient is φ = 60716448.

The previous prime is 122990983. The next prime is 122990999. The reversal of 122990992 is 299099221.

It is a super-2 number, since 2×122990992² = 30253568226288128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122990999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47388 + ... + 49915.

It is an arithmetic number, because the mean of its divisors is an integer number (12065696).

Almost surely, 2^122990992 is an apocalyptic number.

It is an amenable number.

122990992 is a deficient number, since it is larger than the sum of its proper divisors (118322928).

122990992 is an equidigital number, since it uses as much as digits as its factorization.

122990992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97390 (or 97384 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 122990992 is about 11090.1303869702. The cubic root of 122990992 is about 497.3068425172.

The spelling of 122990992 in words is "one hundred twenty-two million, nine hundred ninety thousand, nine hundred ninety-two".