1320242133 has 24 divisors (see below), whose sum is σ = 2049537600. Its totient is φ = 753755520.

The previous prime is 1320242087. The next prime is 1320242191. The reversal of 1320242133 is 3312420231.

It is not a de Polignac number, because 1320242133 - 2⁶ = 1320242069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320242533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196768 + ... + 203366.

It is an arithmetic number, because the mean of its divisors is an integer number (85397400).

Almost surely, 2^1320242133 is an apocalyptic number.

It is an amenable number.

1320242133 is a deficient number, since it is larger than the sum of its proper divisors (729295467).

1320242133 is a wasteful number, since it uses less digits than its factorization.

1320242133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7977 (or 7970 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1320242133 is about 36335.1363421138. The cubic root of 1320242133 is about 1097.0283797527.

Adding to 1320242133 its reverse (3312420231), we get a palindrome (4632662364).

The spelling of 1320242133 in words is "one billion, three hundred twenty million, two hundred forty-two thousand, one hundred thirty-three".