12443143 has 4 divisors (see below), whose sum is σ = 12450240. Its totient is φ = 12436048.

The previous prime is 12443129. The next prime is 12443147. The reversal of 12443143 is 34134421.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12443143 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12443147) 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, 1203 + ... + 5131.

It is an arithmetic number, because the mean of its divisors is an integer number (3112560).

Almost surely, 2^12443143 is an apocalyptic number.

12443143 is a deficient number, since it is larger than the sum of its proper divisors (7097).

12443143 is an equidigital number, since it uses as much as digits as its factorization.

12443143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7096.

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

The square root of 12443143 is about 3527.4839475184. The cubic root of 12443143 is about 231.7270310640.

Adding to 12443143 its reverse (34134421), we get a palindrome (46577564).

The spelling of 12443143 in words is "twelve million, four hundred forty-three thousand, one hundred forty-three".