12421158 has 16 divisors (see below), whose sum is σ = 25033536. Its totient is φ = 4108520.

The previous prime is 12421121. The next prime is 12421163. The reversal of 12421158 is 85112421.

It is a congruent number.

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, 7116 + ... + 8687.

It is an arithmetic number, because the mean of its divisors is an integer number (1564596).

Almost surely, 2^12421158 is an apocalyptic number.

12421158 is an abundant number, since it is smaller than the sum of its proper divisors (12612378).

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

12421158 is a wasteful number, since it uses less digits than its factorization.

12421158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15939.

The product of its digits is 640, while the sum is 24.

The square root of 12421158 is about 3524.3663260223. The cubic root of 12421158 is about 231.5904760119.

Adding to 12421158 its reverse (85112421), we get a palindrome (97533579).

The spelling of 12421158 in words is "twelve million, four hundred twenty-one thousand, one hundred fifty-eight".