122243140 has 24 divisors (see below), whose sum is σ = 262973592. Its totient is φ = 47704320.

The previous prime is 122243129. The next prime is 122243159. The reversal of 122243140 is 41342221.

It can be written as a sum of positive squares in 4 ways, for example, as 19342404 + 102900736 = 4398^2 + 10144^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73719 + ... + 75358.

It is an arithmetic number, because the mean of its divisors is an integer number (10957233).

Almost surely, 2^122243140 is an apocalyptic number.

122243140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122243140 is an abundant number, since it is smaller than the sum of its proper divisors (140730452).

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

122243140 is a wasteful number, since it uses less digits than its factorization.

122243140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149127 (or 149125 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 122243140 is about 11056.3619694726. The cubic root of 122243140 is about 496.2968274033.

Adding to 122243140 its reverse (41342221), we get a palindrome (163585361).

The spelling of 122243140 in words is "one hundred twenty-two million, two hundred forty-three thousand, one hundred forty".