1243412413 has 2 divisors, whose sum is σ = 1243412414. Its totient is φ = 1243412412.

The previous prime is 1243412389. The next prime is 1243412447. The reversal of 1243412413 is 3142143421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1212919929 + 30492484 = 34827^2 + 5522^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1243412413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1243212413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621706206 + 621706207.

It is an arithmetic number, because the mean of its divisors is an integer number (621706207).

Almost surely, 2^1243412413 is an apocalyptic number.

It is an amenable number.

1243412413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243412413 is an equidigital number, since it uses as much as digits as its factorization.

1243412413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 25.

The square root of 1243412413 is about 35262.0534427591. The cubic root of 1243412413 is about 1075.3216742058.

Adding to 1243412413 its reverse (3142143421), we get a palindrome (4385555834).

The spelling of 1243412413 in words is "one billion, two hundred forty-three million, four hundred twelve thousand, four hundred thirteen".