12729571 has 2 divisors, whose sum is σ = 12729572. Its totient is φ = 12729570.

The previous prime is 12729559. The next prime is 12729589. The reversal of 12729571 is 17592721.

12729571 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 12729571 - 2⁵ = 12729539 is a prime.

It is not a weakly prime, because it can be changed into another prime (12729271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6364785 + 6364786.

It is an arithmetic number, because the mean of its divisors is an integer number (6364786).

Almost surely, 2^12729571 is an apocalyptic number.

12729571 is a deficient number, since it is larger than the sum of its proper divisors (1).

12729571 is an equidigital number, since it uses as much as digits as its factorization.

12729571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8820, while the sum is 34.

The square root of 12729571 is about 3567.8524352893. The cubic root of 12729571 is about 233.4915971647.

The spelling of 12729571 in words is "twelve million, seven hundred twenty-nine thousand, five hundred seventy-one".