12408442 has 8 divisors (see below), whose sum is σ = 18638100. Its totient is φ = 6195744.

The previous prime is 12408427. The next prime is 12408443. The reversal of 12408442 is 24480421.

It can be written as a sum of positive squares in 2 ways, for example, as 9616201 + 2792241 = 3101^2 + 1671^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12408443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2217 + ... + 5452.

Almost surely, 2^12408442 is an apocalyptic number.

12408442 is a deficient number, since it is larger than the sum of its proper divisors (6229658).

12408442 is an equidigital number, since it uses as much as digits as its factorization.

12408442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8480.

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 12408442 is about 3522.5618518345. The cubic root of 12408442 is about 231.5114197757.

Adding to 12408442 its reverse (24480421), we get a palindrome (36888863).

The spelling of 12408442 in words is "twelve million, four hundred eight thousand, four hundred forty-two".