1320242533 has 2 divisors, whose sum is σ = 1320242534. Its totient is φ = 1320242532.

The previous prime is 1320242513. The next prime is 1320242557. The reversal of 1320242533 is 3352420231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1232220609 + 88021924 = 35103^2 + 9382^2 .

It is an emirp because it is prime and its reverse (3352420231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1320242533 - 2¹³ = 1320234341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1320242498 and 1320242507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320242503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660121266 + 660121267.

It is an arithmetic number, because the mean of its divisors is an integer number (660121267).

Almost surely, 2^1320242533 is an apocalyptic number.

It is an amenable number.

1320242533 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320242533 is an equidigital number, since it uses as much as digits as its factorization.

1320242533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 1320242533 is about 36335.1418464274. The cubic root of 1320242533 is about 1097.0284905433.

Adding to 1320242533 its reverse (3352420231), we get a palindrome (4672662764).

The spelling of 1320242533 in words is "one billion, three hundred twenty million, two hundred forty-two thousand, five hundred thirty-three".