12450321 has 32 divisors (see below), whose sum is σ = 20160000. Its totient is φ = 7547904.

The previous prime is 12450311. The next prime is 12450323. The reversal of 12450321 is 12305421.

It is not a de Polignac number, because 12450321 - 2¹⁴ = 12433937 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12450294 and 12450303.

It is not an unprimeable number, because it can be changed into a prime (12450323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27505 + ... + 27953.

It is an arithmetic number, because the mean of its divisors is an integer number (630000).

Almost surely, 2^12450321 is an apocalyptic number.

It is an amenable number.

12450321 is a deficient number, since it is larger than the sum of its proper divisors (7709679).

12450321 is a wasteful number, since it uses less digits than its factorization.

12450321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 544 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12450321 is about 3528.5012399034. The cubic root of 12450321 is about 231.7715808183.

Adding to 12450321 its reverse (12305421), we get a palindrome (24755742).

The spelling of 12450321 in words is "twelve million, four hundred fifty thousand, three hundred twenty-one".