122742712660 has 12 divisors (see below), whose sum is σ = 257759696628. Its totient is φ = 49097085056.

The previous prime is 122742712621. The next prime is 122742712711. The reversal of 122742712660 is 66217247221.

It can be written as a sum of positive squares in 2 ways, for example, as 59683467204 + 63059245456 = 244302^2 + 251116^2 .

It is a super-2 number, since 2×122742712660² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3068567797 + ... + 3068567836.

It is an arithmetic number, because the mean of its divisors is an integer number (21479974719).

Almost surely, 2^122742712660 is an apocalyptic number.

122742712660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122742712660 is an abundant number, since it is smaller than the sum of its proper divisors (135016983968).

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

122742712660 is a wasteful number, since it uses less digits than its factorization.

122742712660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6137135642 (or 6137135640 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

Adding to 122742712660 its reverse (66217247221), we get a palindrome (188959959881).

The spelling of 122742712660 in words is "one hundred twenty-two billion, seven hundred forty-two million, seven hundred twelve thousand, six hundred sixty".