12842287 has 2 divisors, whose sum is σ = 12842288. Its totient is φ = 12842286.

The previous prime is 12842279. The next prime is 12842311. The reversal of 12842287 is 78224821.

12842287 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (78224821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12842287 - 2³ = 12842279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12842237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6421143 + 6421144.

It is an arithmetic number, because the mean of its divisors is an integer number (6421144).

Almost surely, 2^12842287 is an apocalyptic number.

12842287 is a deficient number, since it is larger than the sum of its proper divisors (1).

12842287 is an equidigital number, since it uses as much as digits as its factorization.

12842287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14336, while the sum is 34.

The square root of 12842287 is about 3583.6136789559. The cubic root of 12842287 is about 234.1787357724.

The spelling of 12842287 in words is "twelve million, eight hundred forty-two thousand, two hundred eighty-seven".