122640260 has 48 divisors (see below), whose sum is σ = 262951920. Its totient is φ = 48038400.

The previous prime is 122640253. The next prime is 122640281. The reversal of 122640260 is 62046221.

It can be written as a sum of positive squares in 8 ways, for example, as 802816 + 121837444 = 896^2 + 11038^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219902 + ... + 220458.

It is an arithmetic number, because the mean of its divisors is an integer number (5478165).

Almost surely, 2^122640260 is an apocalyptic number.

122640260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122640260 is an abundant number, since it is smaller than the sum of its proper divisors (140311660).

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

122640260 is a wasteful number, since it uses less digits than its factorization.

122640260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776 (or 774 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 122640260 is about 11074.3062988162. The cubic root of 122640260 is about 496.8336710479.

Adding to 122640260 its reverse (62046221), we get a palindrome (184686481).

The spelling of 122640260 in words is "one hundred twenty-two million, six hundred forty thousand, two hundred sixty".