1324240243 has 2 divisors, whose sum is σ = 1324240244. Its totient is φ = 1324240242.

The previous prime is 1324240223. The next prime is 1324240271. The reversal of 1324240243 is 3420424231.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1324240243 is a prime.

It is a super-2 number, since 2×1324240243² = 3507224442361398098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1324240213) 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, 662120121 + 662120122.

It is an arithmetic number, because the mean of its divisors is an integer number (662120122).

Almost surely, 2^1324240243 is an apocalyptic number.

1324240243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1324240243 is an equidigital number, since it uses as much as digits as its factorization.

1324240243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 1324240243 is about 36390.1118849613. Note that the first 3 decimals coincide. The cubic root of 1324240243 is about 1098.1346465557.

Adding to 1324240243 its reverse (3420424231), we get a palindrome (4744664474).

The spelling of 1324240243 in words is "one billion, three hundred twenty-four million, two hundred forty thousand, two hundred forty-three".