12724122 has 16 divisors (see below), whose sum is σ = 25990272. Its totient is φ = 4151040.

The previous prime is 12724097. The next prime is 12724133. The reversal of 12724122 is 22142721.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22279 + ... + 22842.

It is an arithmetic number, because the mean of its divisors is an integer number (1624392).

Almost surely, 2^12724122 is an apocalyptic number.

12724122 is an abundant number, since it is smaller than the sum of its proper divisors (13266150).

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

12724122 is a wasteful number, since it uses less digits than its factorization.

12724122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45173.

The product of its digits is 448, while the sum is 21.

The square root of 12724122 is about 3567.0887289217. The cubic root of 12724122 is about 233.4582763954.

Adding to 12724122 its reverse (22142721), we get a palindrome (34866843).

The spelling of 12724122 in words is "twelve million, seven hundred twenty-four thousand, one hundred twenty-two".