12424021 has 8 divisors (see below), whose sum is σ = 12658464. Its totient is φ = 12191760.

The previous prime is 12424019. The next prime is 12424031. The reversal of 12424021 is 12042421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12424021 - 2¹ = 12424019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12423986 and 12424004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12424001) 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, 14610 + ... + 15436.

It is an arithmetic number, because the mean of its divisors is an integer number (1582308).

Almost surely, 2^12424021 is an apocalyptic number.

It is an amenable number.

12424021 is a deficient number, since it is larger than the sum of its proper divisors (234443).

12424021 is an equidigital number, since it uses as much as digits as its factorization.

12424021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 12424021 is about 3524.7724749266. The cubic root of 12424021 is about 231.6082680352.

Adding to 12424021 its reverse (12042421), we get a palindrome (24466442).

The spelling of 12424021 in words is "twelve million, four hundred twenty-four thousand, twenty-one".