12143189 has 2 divisors, whose sum is σ = 12143190. Its totient is φ = 12143188.

The previous prime is 12143161. The next prime is 12143221. The reversal of 12143189 is 98134121.

12143189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9394225 + 2748964 = 3065^2 + 1658^2 .

It is an emirp because it is prime and its reverse (98134121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12143189 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12143119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6071594 + 6071595.

It is an arithmetic number, because the mean of its divisors is an integer number (6071595).

Almost surely, 2^12143189 is an apocalyptic number.

It is an amenable number.

12143189 is a deficient number, since it is larger than the sum of its proper divisors (1).

12143189 is an equidigital number, since it uses as much as digits as its factorization.

12143189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 29.

The square root of 12143189 is about 3484.7078787181. The cubic root of 12143189 is about 229.8498642109.

The spelling of 12143189 in words is "twelve million, one hundred forty-three thousand, one hundred eighty-nine".