12424247 has 4 divisors (see below), whose sum is σ = 13553736. Its totient is φ = 11294760.

The previous prime is 12424241. The next prime is 12424319. The reversal of 12424247 is 74242421.

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

It is a cyclic number.

It is not a de Polignac number, because 12424247 - 2⁴ = 12424231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12424241) 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, 564728 + ... + 564749.

It is an arithmetic number, because the mean of its divisors is an integer number (3388434).

Almost surely, 2^12424247 is an apocalyptic number.

12424247 is a deficient number, since it is larger than the sum of its proper divisors (1129489).

12424247 is a wasteful number, since it uses less digits than its factorization.

12424247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129488.

The product of its digits is 3584, while the sum is 26.

The square root of 12424247 is about 3524.8045335876. The cubic root of 12424247 is about 231.6096723887.

Adding to 12424247 its reverse (74242421), we get a palindrome (86666668).

It can be divided in two parts, 1242424 and 7, that multiplied together give a palindrome (8696968).

The spelling of 12424247 in words is "twelve million, four hundred twenty-four thousand, two hundred forty-seven".