12858427 has 2 divisors, whose sum is σ = 12858428. Its totient is φ = 12858426.

The previous prime is 12858413. The next prime is 12858431. The reversal of 12858427 is 72485821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12858427 - 2⁷ = 12858299 is a prime.

It is not a weakly prime, because it can be changed into another prime (12858407) 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, 6429213 + 6429214.

It is an arithmetic number, because the mean of its divisors is an integer number (6429214).

Almost surely, 2^12858427 is an apocalyptic number.

12858427 is a deficient number, since it is larger than the sum of its proper divisors (1).

12858427 is an equidigital number, since it uses as much as digits as its factorization.

12858427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35840, while the sum is 37.

The square root of 12858427 is about 3585.8648886984. The cubic root of 12858427 is about 234.2767988484.

The spelling of 12858427 in words is "twelve million, eight hundred fifty-eight thousand, four hundred twenty-seven".