12842279 has 2 divisors, whose sum is σ = 12842280. Its totient is φ = 12842278.

The previous prime is 12842237. The next prime is 12842287. The reversal of 12842279 is 97224821.

It is a strong prime.

It is an emirp because it is prime and its reverse (97224821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12842279 - 2⁸ = 12842023 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 (12842209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6421139 + 6421140.

It is an arithmetic number, because the mean of its divisors is an integer number (6421140).

Almost surely, 2^12842279 is an apocalyptic number.

12842279 is a deficient number, since it is larger than the sum of its proper divisors (1).

12842279 is an equidigital number, since it uses as much as digits as its factorization.

12842279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 35.

The square root of 12842279 is about 3583.6125627640. The cubic root of 12842279 is about 234.1786871458.

The spelling of 12842279 in words is "twelve million, eight hundred forty-two thousand, two hundred seventy-nine".