12424217 has 4 divisors (see below), whose sum is σ = 13379940. Its totient is φ = 11468496.

The previous prime is 12424201. The next prime is 12424231. The reversal of 12424217 is 71242421.

12424217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4477456 + 7946761 = 2116^2 + 2819^2 .

It is not a de Polignac number, because 12424217 - 2⁴ = 12424201 is a prime.

It is a super-2 number, since 2×12424217² = 308722336126178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12424192 and 12424201.

It is not an unprimeable number, because it can be changed into a prime (12421217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477842 + ... + 477867.

It is an arithmetic number, because the mean of its divisors is an integer number (3344985).

Almost surely, 2^12424217 is an apocalyptic number.

It is an amenable number.

12424217 is a deficient number, since it is larger than the sum of its proper divisors (955723).

12424217 is an equidigital number, since it uses as much as digits as its factorization.

12424217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955722.

The product of its digits is 896, while the sum is 23.

The square root of 12424217 is about 3524.8002780299. The cubic root of 12424217 is about 231.6094859710.

Adding to 12424217 its reverse (71242421), we get a palindrome (83666638).

The spelling of 12424217 in words is "twelve million, four hundred twenty-four thousand, two hundred seventeen".