12442445 has 4 divisors (see below), whose sum is σ = 14930940. Its totient is φ = 9953952.

The previous prime is 12442429. The next prime is 12442513. The reversal of 12442445 is 54424421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54424421 = 1669 ⋅32609.

It can be written as a sum of positive squares in 2 ways, for example, as 5541316 + 6901129 = 2354^2 + 2627^2 .

It is a cyclic number.

It is not a de Polignac number, because 12442445 - 2⁴ = 12442429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1244240 + ... + 1244249.

It is an arithmetic number, because the mean of its divisors is an integer number (3732735).

Almost surely, 2^12442445 is an apocalyptic number.

It is an amenable number.

12442445 is a deficient number, since it is larger than the sum of its proper divisors (2488495).

12442445 is an equidigital number, since it uses as much as digits as its factorization.

12442445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2488494.

The product of its digits is 5120, while the sum is 26.

The square root of 12442445 is about 3527.3850087565. The cubic root of 12442445 is about 231.7226980619.

Adding to 12442445 its reverse (54424421), we get a palindrome (66866866).

The spelling of 12442445 in words is "twelve million, four hundred forty-two thousand, four hundred forty-five".