13005143 has 4 divisors (see below), whose sum is σ = 13570608. Its totient is φ = 12439680.

The previous prime is 13005133. The next prime is 13005173. The reversal of 13005143 is 34150031.

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 13005143 - 2⁴ = 13005127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13005103) 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, 282698 + ... + 282743.

It is an arithmetic number, because the mean of its divisors is an integer number (3392652).

Almost surely, 2^13005143 is an apocalyptic number.

13005143 is a deficient number, since it is larger than the sum of its proper divisors (565465).

13005143 is an equidigital number, since it uses as much as digits as its factorization.

13005143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565464.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 13005143 is about 3606.2644107164. The cubic root of 13005143 is about 235.1644721565.

Adding to 13005143 its reverse (34150031), we get a palindrome (47155174).

The spelling of 13005143 in words is "thirteen million, five thousand, one hundred forty-three".