12423427 has 4 divisors (see below), whose sum is σ = 12963600. Its totient is φ = 11883256.

The previous prime is 12423409. The next prime is 12423457. The reversal of 12423427 is 72432421.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12423427 - 2¹⁵ = 12390659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12423407) 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, 270052 + ... + 270097.

It is an arithmetic number, because the mean of its divisors is an integer number (3240900).

Almost surely, 2^12423427 is an apocalyptic number.

12423427 is a deficient number, since it is larger than the sum of its proper divisors (540173).

12423427 is an equidigital number, since it uses as much as digits as its factorization.

12423427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540172.

The product of its digits is 2688, while the sum is 25.

The square root of 12423427 is about 3524.6882131616. The cubic root of 12423427 is about 231.6045768656.

Adding to 12423427 its reverse (72432421), we get a palindrome (84855848).

The spelling of 12423427 in words is "twelve million, four hundred twenty-three thousand, four hundred twenty-seven".