122977740 has 24 divisors (see below), whose sum is σ = 344337840. Its totient is φ = 32794048.

The previous prime is 122977739. The next prime is 122977759. The reversal of 122977740 is 47779221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1024755 + ... + 1024874.

It is an arithmetic number, because the mean of its divisors is an integer number (14347410).

Almost surely, 2^122977740 is an apocalyptic number.

122977740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122977740 is an abundant number, since it is smaller than the sum of its proper divisors (221360100).

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

122977740 is a wasteful number, since it uses less digits than its factorization.

122977740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049641 (or 2049639 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 39.

The square root of 122977740 is about 11089.5329026970. The cubic root of 122977740 is about 497.2889806481.

The spelling of 122977740 in words is "one hundred twenty-two million, nine hundred seventy-seven thousand, seven hundred forty".