122805294840 has 96 divisors (see below), whose sum is σ = 404738661600. Its totient is φ = 32286831360.

The previous prime is 122805294823. The next prime is 122805294847. The reversal of 122805294840 is 48492508221.

122805294840 is a `hidden beast` number, since 1 + 2 + 2 + 80 + 529 + 4 + 8 + 40 = 666.

It is a super-2 number, since 2×122805294840² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122805294847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2376735 + ... + 2427854.

It is an arithmetic number, because the mean of its divisors is an integer number (4216027725).

Almost surely, 2^122805294840 is an apocalyptic number.

122805294840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122805294840 is an abundant number, since it is smaller than the sum of its proper divisors (281933366760).

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

122805294840 is a wasteful number, since it uses less digits than its factorization.

122805294840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4804677 (or 4804670 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 122805294840 in words is "one hundred twenty-two billion, eight hundred five million, two hundred ninety-four thousand, eight hundred forty".