122942399580 has 864 divisors, whose sum is σ = 511068579840. Its totient is φ = 23225978880.

The previous prime is 122942399579. The next prime is 122942399651. The reversal of 122942399580 is 85993249221.

122942399580 is a `hidden beast` number, since 1 + 2 + 29 + 4 + 2 + 39 + 9 + 580 = 666.

It is a super-2 number, since 2×122942399580² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 287 ways as a sum of consecutive naturals, for example, 170990461 + ... + 170991179.

It is an arithmetic number, because the mean of its divisors is an integer number (591514560).

Almost surely, 2^122942399580 is an apocalyptic number.

122942399580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122942399580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255534289920).

122942399580 is an abundant number, since it is smaller than the sum of its proper divisors (388126180260).

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

122942399580 is a wasteful number, since it uses less digits than its factorization.

122942399580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851 (or 833 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 122942399580 in words is "one hundred twenty-two billion, nine hundred forty-two million, three hundred ninety-nine thousand, five hundred eighty".