12321258 has 16 divisors (see below), whose sum is σ = 24692160. Its totient is φ = 4098816.

The previous prime is 12321247. The next prime is 12321289. The reversal of 12321258 is 85212321.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1683 + ... + 5241.

It is an arithmetic number, because the mean of its divisors is an integer number (1543260).

Almost surely, 2^12321258 is an apocalyptic number.

12321258 is an abundant number, since it is smaller than the sum of its proper divisors (12370902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12321258 is a wasteful number, since it uses less digits than its factorization.

12321258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4141.

The product of its digits is 960, while the sum is 24.

The square root of 12321258 is about 3510.1649533889. The cubic root of 12321258 is about 230.9679309317.

Adding to 12321258 its reverse (85212321), we get a palindrome (97533579).

The spelling of 12321258 in words is "twelve million, three hundred twenty-one thousand, two hundred fifty-eight".