12481424 has 20 divisors (see below), whose sum is σ = 24237660. Its totient is φ = 6226560.

The previous prime is 12481421. The next prime is 12481429. The reversal of 12481424 is 42418421.

It can be written as a sum of positive squares in 2 ways, for example, as 7463824 + 5017600 = 2732^2 + 2240^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 12481393 and 12481402.

It is not an unprimeable number, because it can be changed into a prime (12481421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12794 + ... + 13734.

It is an arithmetic number, because the mean of its divisors is an integer number (1211883).

Almost surely, 2^12481424 is an apocalyptic number.

It is an amenable number.

12481424 is a deficient number, since it is larger than the sum of its proper divisors (11756236).

12481424 is an equidigital number, since it uses as much as digits as its factorization.

12481424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778 (or 1772 counting only the distinct ones).

The product of its digits is 2048, while the sum is 26.

The square root of 12481424 is about 3532.9058860943. The cubic root of 12481424 is about 231.9644218133.

Adding to 12481424 its reverse (42418421), we get a palindrome (54899845).

The spelling of 12481424 in words is "twelve million, four hundred eighty-one thousand, four hundred twenty-four".