12591043 has 2 divisors, whose sum is σ = 12591044. Its totient is φ = 12591042.

The previous prime is 12591041. The next prime is 12591149. The reversal of 12591043 is 34019521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12591043 - 2¹ = 12591041 is a prime.

Together with 12591041, it forms a pair of twin primes.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 12590999 and 12591017.

It is not a weakly prime, because it can be changed into another prime (12591041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6295521 + 6295522.

It is an arithmetic number, because the mean of its divisors is an integer number (6295522).

Almost surely, 2^12591043 is an apocalyptic number.

12591043 is a deficient number, since it is larger than the sum of its proper divisors (1).

12591043 is an equidigital number, since it uses as much as digits as its factorization.

12591043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 12591043 is about 3548.3859711142. The cubic root of 12591043 is about 232.6415248113.

The spelling of 12591043 in words is "twelve million, five hundred ninety-one thousand, forty-three".