12321427 has 8 divisors (see below), whose sum is σ = 12549600. Its totient is φ = 12095424.

The previous prime is 12321409. The next prime is 12321431. The reversal of 12321427 is 72412321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12321427 - 2⁷ = 12321299 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12321398 and 12321407.

It is not an unprimeable number, because it can be changed into a prime (12321437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14449 + ... + 15277.

It is an arithmetic number, because the mean of its divisors is an integer number (1568700).

Almost surely, 2^12321427 is an apocalyptic number.

12321427 is a deficient number, since it is larger than the sum of its proper divisors (228173).

12321427 is an equidigital number, since it uses as much as digits as its factorization.

12321427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085.

The product of its digits is 672, while the sum is 22.

The square root of 12321427 is about 3510.1890262492. The cubic root of 12321427 is about 230.9689869224.

Adding to 12321427 its reverse (72412321), we get a palindrome (84733748).

The spelling of 12321427 in words is "twelve million, three hundred twenty-one thousand, four hundred twenty-seven".