12543379 has 2 divisors, whose sum is σ = 12543380. Its totient is φ = 12543378.

The previous prime is 12543367. The next prime is 12543397. The reversal of 12543379 is 97334521.

Together with next prime (12543397) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12543379 - 2⁵ = 12543347 is a prime.

It is not a weakly prime, because it can be changed into another prime (12543319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6271689 + 6271690.

It is an arithmetic number, because the mean of its divisors is an integer number (6271690).

Almost surely, 2^12543379 is an apocalyptic number.

12543379 is a deficient number, since it is larger than the sum of its proper divisors (1).

12543379 is an equidigital number, since it uses as much as digits as its factorization.

12543379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 34.

The square root of 12543379 is about 3541.6633098023. The cubic root of 12543379 is about 232.3475950361.

The spelling of 12543379 in words is "twelve million, five hundred forty-three thousand, three hundred seventy-nine".