12421412 has 12 divisors (see below), whose sum is σ = 21930636. Its totient is φ = 6155520.

The previous prime is 12421399. The next prime is 12421417. The reversal of 12421412 is 21412421.

It can be written as a sum of positive squares in 2 ways, for example, as 5837056 + 6584356 = 2416^2 + 2566^2 .

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (12421417) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 13289 + ... + 14192.

It is an arithmetic number, because the mean of its divisors is an integer number (1827553).

Almost surely, 2^12421412 is an apocalyptic number.

It is an amenable number.

12421412 is a deficient number, since it is larger than the sum of its proper divisors (9509224).

12421412 is a wasteful number, since it uses less digits than its factorization.

12421412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27598 (or 27596 counting only the distinct ones).

The product of its digits is 128, while the sum is 17.

The square root of 12421412 is about 3524.4023606847. The cubic root of 12421412 is about 231.5920545974.

Adding to 12421412 its reverse (21412421), we get a palindrome (33833833).

The spelling of 12421412 in words is "twelve million, four hundred twenty-one thousand, four hundred twelve".