1320200144 has 20 divisors (see below), whose sum is σ = 2708352324. Its totient is φ = 621270528.

The previous prime is 1320200129. The next prime is 1320200153. The reversal of 1320200144 is 4410020231.

It can be written as a sum of positive squares in 2 ways, for example, as 689587600 + 630612544 = 26260^2 + 25112^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2426567 + ... + 2427110.

Almost surely, 2^1320200144 is an apocalyptic number.

It is an amenable number.

1320200144 is an abundant number, since it is smaller than the sum of its proper divisors (1388152180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1320200144 is a wasteful number, since it uses less digits than its factorization.

1320200144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4853702 (or 4853696 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1320200144 is about 36334.5585359173. The cubic root of 1320200144 is about 1097.0167496605.

Adding to 1320200144 its reverse (4410020231), we get a palindrome (5730220375).

The spelling of 1320200144 in words is "one billion, three hundred twenty million, two hundred thousand, one hundred forty-four".