12115143 has 16 divisors (see below), whose sum is σ = 18332160. Its totient is φ = 7904088.

The previous prime is 12115139. The next prime is 12115151. The reversal of 12115143 is 34151121.

It is not a de Polignac number, because 12115143 - 2² = 12115139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12115123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3505 + ... + 6042.

It is an arithmetic number, because the mean of its divisors is an integer number (1145760).

Almost surely, 2^12115143 is an apocalyptic number.

12115143 is a deficient number, since it is larger than the sum of its proper divisors (6217017).

12115143 is an equidigital number, since it uses as much as digits as its factorization.

12115143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9603 (or 9597 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 12115143 is about 3480.6813988068. The cubic root of 12115143 is about 229.6727734831.

Adding to 12115143 its reverse (34151121), we get a palindrome (46266264).

The spelling of 12115143 in words is "twelve million, one hundred fifteen thousand, one hundred forty-three".