1304143 has 4 divisors (see below), whose sum is σ = 1308888. Its totient is φ = 1299400.

The previous prime is 1304137. The next prime is 1304167. The reversal of 1304143 is 3414031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1304143 - 2⁵ = 1304111 is a prime.

It is a Duffinian number.

1304143 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1933 + ... + 2518.

It is an arithmetic number, because the mean of its divisors is an integer number (327222).

2^1304143 is an apocalyptic number.

1304143 is a deficient number, since it is larger than the sum of its proper divisors (4745).

1304143 is an equidigital number, since it uses as much as digits as its factorization.

1304143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4744.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1304143 is about 1141.9908055672. The cubic root of 1304143 is about 109.2551048658.

Adding to 1304143 its reverse (3414031), we get a palindrome (4718174).

The spelling of 1304143 in words is "one million, three hundred four thousand, one hundred forty-three".