12421329 has 8 divisors (see below), whose sum is σ = 16842720. Its totient is φ = 8140416.

The previous prime is 12421327. The next prime is 12421333. The reversal of 12421329 is 92312421.

12421329 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12421329 - 2¹ = 12421327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12421299 and 12421308.

It is not an unprimeable number, because it can be changed into a prime (12421327) 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, 34912 + ... + 35265.

It is an arithmetic number, because the mean of its divisors is an integer number (2105340).

Almost surely, 2^12421329 is an apocalyptic number.

It is an amenable number.

12421329 is a deficient number, since it is larger than the sum of its proper divisors (4421391).

12421329 is an equidigital number, since it uses as much as digits as its factorization.

12421329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70239.

The product of its digits is 864, while the sum is 24.

The square root of 12421329 is about 3524.3905856190. The cubic root of 12421329 is about 231.5915387628.

The spelling of 12421329 in words is "twelve million, four hundred twenty-one thousand, three hundred twenty-nine".