122739800040 has 256 divisors, whose sum is σ = 480659961600. Its totient is φ = 27466214400.

The previous prime is 122739800039. The next prime is 122739800047. The reversal of 122739800040 is 40008937221.

122739800040 is a `hidden beast` number, since 1 + 227 + 398 + 0 + 0 + 0 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 122739799968 and 122739800004.

It is not an unprimeable number, because it can be changed into a prime (122739800047) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 242931 + ... + 551810.

It is an arithmetic number, because the mean of its divisors is an integer number (1877577975).

Almost surely, 2^122739800040 is an apocalyptic number.

122739800040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122739800040 is an abundant number, since it is smaller than the sum of its proper divisors (357920161560).

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

122739800040 is a wasteful number, since it uses less digits than its factorization.

122739800040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794785 (or 794775 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 122739800040 in words is "one hundred twenty-two billion, seven hundred thirty-nine million, eight hundred thousand, forty".