12142589 has 2 divisors, whose sum is σ = 12142590. Its totient is φ = 12142588.

The previous prime is 12142579. The next prime is 12142609. The reversal of 12142589 is 98524121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12020089 + 122500 = 3467^2 + 350^2 .

It is an emirp because it is prime and its reverse (98524121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12142589 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 (12142579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6071294 + 6071295.

It is an arithmetic number, because the mean of its divisors is an integer number (6071295).

Almost surely, 2^12142589 is an apocalyptic number.

It is an amenable number.

12142589 is a deficient number, since it is larger than the sum of its proper divisors (1).

12142589 is an equidigital number, since it uses as much as digits as its factorization.

12142589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 32.

The square root of 12142589 is about 3484.6217872245. The cubic root of 12142589 is about 229.8460784895.

The spelling of 12142589 in words is "twelve million, one hundred forty-two thousand, five hundred eighty-nine".