12871247 has 2 divisors, whose sum is σ = 12871248. Its totient is φ = 12871246.

The previous prime is 12871241. The next prime is 12871259. The reversal of 12871247 is 74217821.

It is a happy number.

12871247 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 is a cyclic number.

It is not a de Polignac number, because 12871247 - 2¹⁶ = 12805711 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 (12871241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6435623 + 6435624.

It is an arithmetic number, because the mean of its divisors is an integer number (6435624).

Almost surely, 2^12871247 is an apocalyptic number.

12871247 is a deficient number, since it is larger than the sum of its proper divisors (1).

12871247 is an equidigital number, since it uses as much as digits as its factorization.

12871247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6272, while the sum is 32.

The square root of 12871247 is about 3587.6520176851. The cubic root of 12871247 is about 234.3546318774.

The spelling of 12871247 in words is "twelve million, eight hundred seventy-one thousand, two hundred forty-seven".