1320443 has 4 divisors (see below), whose sum is σ = 1389960. Its totient is φ = 1250928.

The previous prime is 1320437. The next prime is 1320533. The reversal of 1320443 is 3440231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3440231 = 59 ⋅58309.

It is a cyclic number.

It is not a de Polignac number, because 1320443 - 2⁴ = 1320427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34730 + ... + 34767.

It is an arithmetic number, because the mean of its divisors is an integer number (347490).

2^1320443 is an apocalyptic number.

1320443 is a deficient number, since it is larger than the sum of its proper divisors (69517).

1320443 is an equidigital number, since it uses as much as digits as its factorization.

1320443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69516.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 1320443 is about 1149.1053041388. The cubic root of 1320443 is about 109.7084012382.

Adding to 1320443 its reverse (3440231), we get a palindrome (4760674).

The spelling of 1320443 in words is "one million, three hundred twenty thousand, four hundred forty-three".