12842861 has 2 divisors, whose sum is σ = 12842862. Its totient is φ = 12842860.

The previous prime is 12842849. The next prime is 12842887. The reversal of 12842861 is 16824821.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11356900 + 1485961 = 3370^2 + 1219^2 .

It is a cyclic number.

It is not a de Polignac number, because 12842861 - 2²² = 8648557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12842821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6421430 + 6421431.

It is an arithmetic number, because the mean of its divisors is an integer number (6421431).

Almost surely, 2^12842861 is an apocalyptic number.

It is an amenable number.

12842861 is a deficient number, since it is larger than the sum of its proper divisors (1).

12842861 is an equidigital number, since it uses as much as digits as its factorization.

12842861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6144, while the sum is 32.

The square root of 12842861 is about 3583.6937648186. The cubic root of 12842861 is about 234.1822246783.

The spelling of 12842861 in words is "twelve million, eight hundred forty-two thousand, eight hundred sixty-one".