12871543 has 2 divisors, whose sum is σ = 12871544. Its totient is φ = 12871542.

The previous prime is 12871511. The next prime is 12871583. The reversal of 12871543 is 34517821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12871543 - 2⁵ = 12871511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12871583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6435771 + 6435772.

It is an arithmetic number, because the mean of its divisors is an integer number (6435772).

Almost surely, 2^12871543 is an apocalyptic number.

12871543 is a deficient number, since it is larger than the sum of its proper divisors (1).

12871543 is an equidigital number, since it uses as much as digits as its factorization.

12871543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 31.

The square root of 12871543 is about 3587.6932700553. The cubic root of 12871543 is about 234.3564283477.

The spelling of 12871543 in words is "twelve million, eight hundred seventy-one thousand, five hundred forty-three".