122840172790 has 32 divisors (see below), whose sum is σ = 227148777504. Its totient is φ = 47795339520.

The previous prime is 122840172781. The next prime is 122840172797. The reversal of 122840172790 is 97271048221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122840172797) 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 15 ways as a sum of consecutive naturals, for example, 1412242 + ... + 1496698.

It is an arithmetic number, because the mean of its divisors is an integer number (7098399297).

Almost surely, 2^122840172790 is an apocalyptic number.

122840172790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122840172790 is a deficient number, since it is larger than the sum of its proper divisors (104308604714).

122840172790 is a wasteful number, since it uses less digits than its factorization.

122840172790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88432.

The product of its (nonzero) digits is 112896, while the sum is 43.

The spelling of 122840172790 in words is "one hundred twenty-two billion, eight hundred forty million, one hundred seventy-two thousand, seven hundred ninety".