12678427 has 2 divisors, whose sum is σ = 12678428. Its totient is φ = 12678426.

The previous prime is 12678371. The next prime is 12678431. The reversal of 12678427 is 72487621.

12678427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12678427 - 2⁷ = 12678299 is a prime.

It is a super-2 number, since 2×12678427² = 321485022388658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12678437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6339213 + 6339214.

It is an arithmetic number, because the mean of its divisors is an integer number (6339214).

Almost surely, 2^12678427 is an apocalyptic number.

12678427 is a deficient number, since it is larger than the sum of its proper divisors (1).

12678427 is an equidigital number, since it uses as much as digits as its factorization.

12678427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37632, while the sum is 37.

The square root of 12678427 is about 3560.6778848978. The cubic root of 12678427 is about 233.1784752514.

The spelling of 12678427 in words is "twelve million, six hundred seventy-eight thousand, four hundred twenty-seven".