12105427 has 2 divisors, whose sum is σ = 12105428. Its totient is φ = 12105426.

The previous prime is 12105421. The next prime is 12105433. The reversal of 12105427 is 72450121.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (12105421) and next prime (12105433).

It is a cyclic number.

It is not a de Polignac number, because 12105427 - 2³ = 12105419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12105398 and 12105407.

It is not a weakly prime, because it can be changed into another prime (12105421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6052713 + 6052714.

It is an arithmetic number, because the mean of its divisors is an integer number (6052714).

Almost surely, 2^12105427 is an apocalyptic number.

12105427 is a deficient number, since it is larger than the sum of its proper divisors (1).

12105427 is an equidigital number, since it uses as much as digits as its factorization.

12105427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 12105427 is about 3479.2854151391. The cubic root of 12105427 is about 229.6113600530.

Adding to 12105427 its reverse (72450121), we get a palindrome (84555548).

The spelling of 12105427 in words is "twelve million, one hundred five thousand, four hundred twenty-seven".