12421248 has 64 divisors (see below), whose sum is σ = 37715520. Its totient is φ = 3548160.

The previous prime is 12421243. The next prime is 12421261. The reversal of 12421248 is 84212421.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

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 (12421243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378 + ... + 4998.

It is an arithmetic number, because the mean of its divisors is an integer number (589305).

Almost surely, 2^12421248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12421248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18857760).

12421248 is an abundant number, since it is smaller than the sum of its proper divisors (25294272).

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

12421248 is an equidigital number, since it uses as much as digits as its factorization.

12421248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4645 (or 4633 counting only the distinct ones).

The product of its digits is 1024, while the sum is 24.

The square root of 12421248 is about 3524.3790942519. The cubic root of 12421248 is about 231.5910353557.

Adding to 12421248 its reverse (84212421), we get a palindrome (96633669).

The spelling of 12421248 in words is "twelve million, four hundred twenty-one thousand, two hundred forty-eight".