1324121243 has 2 divisors, whose sum is σ = 1324121244. Its totient is φ = 1324121242.

The previous prime is 1324121233. The next prime is 1324121269. The reversal of 1324121243 is 3421214231.

It is a weak prime.

It is an emirp because it is prime and its reverse (3421214231) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1324121243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1324121233) 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, 662060621 + 662060622.

It is an arithmetic number, because the mean of its divisors is an integer number (662060622).

Almost surely, 2^1324121243 is an apocalyptic number.

1324121243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1324121243 is an equidigital number, since it uses as much as digits as its factorization.

1324121243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 23.

The square root of 1324121243 is about 36388.4767886758. The cubic root of 1324121243 is about 1098.1017517346.

Adding to 1324121243 its reverse (3421214231), we get a palindrome (4745335474).

The spelling of 1324121243 in words is "one billion, three hundred twenty-four million, one hundred twenty-one thousand, two hundred forty-three".