12424561 has 2 divisors, whose sum is σ = 12424562. Its totient is φ = 12424560.

The previous prime is 12424543. The next prime is 12424571. The reversal of 12424561 is 16542421.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8014561 + 4410000 = 2831^2 + 2100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12424561 is a prime.

It is not a weakly prime, because it can be changed into another prime (12424571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6212280 + 6212281.

It is an arithmetic number, because the mean of its divisors is an integer number (6212281).

Almost surely, 2^12424561 is an apocalyptic number.

It is an amenable number.

12424561 is a deficient number, since it is larger than the sum of its proper divisors (1).

12424561 is an equidigital number, since it uses as much as digits as its factorization.

12424561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 25.

The square root of 12424561 is about 3524.8490747832. The cubic root of 12424561 is about 231.6116235418.

Adding to 12424561 its reverse (16542421), we get a palindrome (28966982).

The spelling of 12424561 in words is "twelve million, four hundred twenty-four thousand, five hundred sixty-one".