1224413 has 2 divisors, whose sum is σ = 1224414. Its totient is φ = 1224412.

The previous prime is 1224403. The next prime is 1224437. The reversal of 1224413 is 3144221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 879844 + 344569 = 938^2 + 587^2 .

It is an emirp because it is prime and its reverse (3144221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1224413 - 2²⁰ = 175837 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1224391 and 1224400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1224403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612206 + 612207.

It is an arithmetic number, because the mean of its divisors is an integer number (612207).

2^1224413 is an apocalyptic number.

It is an amenable number.

1224413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224413 is an equidigital number, since it uses as much as digits as its factorization.

1224413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 17.

The square root of 1224413 is about 1106.5319697144. The cubic root of 1224413 is about 106.9816546415.

Subtracting from 1224413 its product of digits (192), we obtain a palindrome (1224221).

Adding to 1224413 its reverse (3144221), we get a palindrome (4368634).

The spelling of 1224413 in words is "one million, two hundred twenty-four thousand, four hundred thirteen".