12444143 has 4 divisors (see below), whose sum is σ = 12708960. Its totient is φ = 12179328.

The previous prime is 12444139. The next prime is 12444163. The reversal of 12444143 is 34144421.

It is a happy number.

12444143 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34144421 = 59 ⋅578719.

It is a cyclic number.

It is not a de Polignac number, because 12444143 - 2² = 12444139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12444163) 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, 132338 + ... + 132431.

It is an arithmetic number, because the mean of its divisors is an integer number (3177240).

Almost surely, 2^12444143 is an apocalyptic number.

12444143 is a deficient number, since it is larger than the sum of its proper divisors (264817).

12444143 is an equidigital number, since it uses as much as digits as its factorization.

12444143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264816.

The product of its digits is 1536, while the sum is 23.

The square root of 12444143 is about 3527.6256887601. The cubic root of 12444143 is about 231.7332385209.

Adding to 12444143 its reverse (34144421), we get a palindrome (46588564).

The spelling of 12444143 in words is "twelve million, four hundred forty-four thousand, one hundred forty-three".