1320240133 has 8 divisors (see below), whose sum is σ = 1333582488. Its totient is φ = 1306927104.

The previous prime is 1320240107. The next prime is 1320240149. The reversal of 1320240133 is 3310420231.

It can be written as a sum of positive squares in 4 ways, for example, as 324648324 + 995591809 = 18018^2 + 31553^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1320240133 - 2¹⁷ = 1320109061 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1320240133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320241133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89541 + ... + 103237.

It is an arithmetic number, because the mean of its divisors is an integer number (166697811).

Almost surely, 2^1320240133 is an apocalyptic number.

It is an amenable number.

1320240133 is a deficient number, since it is larger than the sum of its proper divisors (13342355).

1320240133 is a wasteful number, since it uses less digits than its factorization.

1320240133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14663.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1320240133 is about 36335.1088205333. The cubic root of 1320240133 is about 1097.0278257993.

Adding to 1320240133 its reverse (3310420231), we get a palindrome (4630660364).

It can be divided in two parts, 13202 and 40133, that added together give a palindrome (53335).

The spelling of 1320240133 in words is "one billion, three hundred twenty million, two hundred forty thousand, one hundred thirty-three".