12442541 has 4 divisors (see below), whose sum is σ = 12471072. Its totient is φ = 12414012.

The previous prime is 12442531. The next prime is 12442553. The reversal of 12442541 is 14524421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12442541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12442531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13601 + ... + 14486.

It is an arithmetic number, because the mean of its divisors is an integer number (3117768).

Almost surely, 2^12442541 is an apocalyptic number.

It is an amenable number.

12442541 is a deficient number, since it is larger than the sum of its proper divisors (28531).

12442541 is an equidigital number, since it uses as much as digits as its factorization.

12442541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28530.

The product of its digits is 1280, while the sum is 23.

The square root of 12442541 is about 3527.3986165445. The cubic root of 12442541 is about 231.7232940145.

Adding to 12442541 its reverse (14524421), we get a palindrome (26966962).

The spelling of 12442541 in words is "twelve million, four hundred forty-two thousand, five hundred forty-one".