1243224443 has 2 divisors, whose sum is σ = 1243224444. Its totient is φ = 1243224442.

The previous prime is 1243224379. The next prime is 1243224487. The reversal of 1243224443 is 3444223421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1243224443 - 2⁶ = 1243224379 is a prime.

It is not a weakly prime, because it can be changed into another prime (1243214443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621612221 + 621612222.

It is an arithmetic number, because the mean of its divisors is an integer number (621612222).

Almost surely, 2^1243224443 is an apocalyptic number.

1243224443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243224443 is an equidigital number, since it uses as much as digits as its factorization.

1243224443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 29.

The square root of 1243224443 is about 35259.3880122727. The cubic root of 1243224443 is about 1075.2674850515.

Adding to 1243224443 its reverse (3444223421), we get a palindrome (4687447864).

The spelling of 1243224443 in words is "one billion, two hundred forty-three million, two hundred twenty-four thousand, four hundred forty-three".