12108427 has 4 divisors (see below), whose sum is σ = 12125680. Its totient is φ = 12091176.

The previous prime is 12108401. The next prime is 12108451. The reversal of 12108427 is 72480121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12108427 is a prime.

It is a super-2 number, since 2×12108427² = 293228008828658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12108727) 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 in 3 ways as a sum of consecutive naturals, for example, 7527 + ... + 8992.

It is an arithmetic number, because the mean of its divisors is an integer number (3031420).

Almost surely, 2^12108427 is an apocalyptic number.

12108427 is a deficient number, since it is larger than the sum of its proper divisors (17253).

12108427 is an equidigital number, since it uses as much as digits as its factorization.

12108427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17252.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 12108427 is about 3479.7165114417. The cubic root of 12108427 is about 229.6303261245.

Adding to 12108427 its reverse (72480121), we get a palindrome (84588548).

The spelling of 12108427 in words is "twelve million, one hundred eight thousand, four hundred twenty-seven".