122555992 has 64 divisors (see below), whose sum is σ = 264962880. Its totient is φ = 52641792.

The previous prime is 122555987. The next prime is 122556013. The reversal of 122555992 is 299555221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181768 + ... + 182440.

It is an arithmetic number, because the mean of its divisors is an integer number (4140045).

Almost surely, 2^122555992 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 122555992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132481440).

122555992 is an abundant number, since it is smaller than the sum of its proper divisors (142406888).

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

122555992 is a wasteful number, since it uses less digits than its factorization.

122555992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812 (or 808 counting only the distinct ones).

The product of its digits is 81000, while the sum is 40.

The square root of 122555992 is about 11070.5009823404. The cubic root of 122555992 is about 496.7198509678.

The spelling of 122555992 in words is "one hundred twenty-two million, five hundred fifty-five thousand, nine hundred ninety-two".