1306143 has 12 divisors (see below), whose sum is σ = 1906320. Its totient is φ = 861696.

The previous prime is 1306139. The next prime is 1306157. The reversal of 1306143 is 3416031.

It is not a de Polignac number, because 1306143 - 2² = 1306139 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 223 + ... + 1631.

It is an arithmetic number, because the mean of its divisors is an integer number (158860).

2^1306143 is an apocalyptic number.

1306143 is a deficient number, since it is larger than the sum of its proper divisors (600177).

1306143 is a wasteful number, since it uses less digits than its factorization.

1306143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518 (or 1515 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1306143 is about 1142.8661338932. The cubic root of 1306143 is about 109.3109266083.

The spelling of 1306143 in words is "one million, three hundred six thousand, one hundred forty-three".