12421244 has 24 divisors (see below), whose sum is σ = 23850288. Its totient is φ = 5613440.

The previous prime is 12421243. The next prime is 12421261. The reversal of 12421244 is 44212421.

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12421243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7952 + ... + 9384.

It is an arithmetic number, because the mean of its divisors is an integer number (993762).

Almost surely, 2^12421244 is an apocalyptic number.

It is an amenable number.

12421244 is a deficient number, since it is larger than the sum of its proper divisors (11429044).

12421244 is a wasteful number, since it uses less digits than its factorization.

12421244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645 (or 1643 counting only the distinct ones).

The product of its digits is 512, while the sum is 20.

The square root of 12421244 is about 3524.3785267760. The cubic root of 12421244 is about 231.5910104960.

Adding to 12421244 its reverse (44212421), we get a palindrome (56633665).

The spelling of 12421244 in words is "twelve million, four hundred twenty-one thousand, two hundred forty-four".