12603442 has 4 divisors (see below), whose sum is σ = 18905166. Its totient is φ = 6301720.

The previous prime is 12603407. The next prime is 12603449. The reversal of 12603442 is 24430621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24430621 = 1571 ⋅15551.

It can be written as a sum of positive squares in only one way, i.e., 8231161 + 4372281 = 2869^2 + 2091^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12603449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3150859 + ... + 3150862.

Almost surely, 2^12603442 is an apocalyptic number.

12603442 is a deficient number, since it is larger than the sum of its proper divisors (6301724).

12603442 is an equidigital number, since it uses as much as digits as its factorization.

12603442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6301723.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 12603442 is about 3550.1326735771. The cubic root of 12603442 is about 232.7178641567.

The spelling of 12603442 in words is "twelve million, six hundred three thousand, four hundred forty-two".