12420244 has 12 divisors (see below), whose sum is σ = 21760564. Its totient is φ = 6202944.

The previous prime is 12420229. The next prime is 12420257. The reversal of 12420244 is 44202421.

It can be written as a sum of positive squares in 2 ways, for example, as 6563844 + 5856400 = 2562^2 + 2420^2 .

It is a super-2 number, since 2×12420244² = 308524922039072, which contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 4744 + ... + 6880.

Almost surely, 2^12420244 is an apocalyptic number.

It is an amenable number.

12420244 is a deficient number, since it is larger than the sum of its proper divisors (9340320).

12420244 is a wasteful number, since it uses less digits than its factorization.

12420244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3594 (or 3592 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 12420244 is about 3524.2366549368. The cubic root of 12420244 is about 231.5847954120.

Adding to 12420244 its reverse (44202421), we get a palindrome (56622665).

The spelling of 12420244 in words is "twelve million, four hundred twenty thousand, two hundred forty-four".