284143 has 4 divisors (see below), whose sum is σ = 286200. Its totient is φ = 282088.

The previous prime is 284131. The next prime is 284149. The reversal of 284143 is 341482.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341482 = 2 ⋅170741.

It is a cyclic number.

It is not a de Polignac number, because 284143 - 2⁵ = 284111 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284149) 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, 805 + ... + 1102.

It is an arithmetic number, because the mean of its divisors is an integer number (71550).

2²⁸⁴¹⁴³ is an apocalyptic number.

284143 is a deficient number, since it is larger than the sum of its proper divisors (2057).

284143 is a wasteful number, since it uses less digits than its factorization.

284143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2056.

The product of its digits is 768, while the sum is 22.

The square root of 284143 is about 533.0506542534. The cubic root of 284143 is about 65.7424150435.

The spelling of 284143 in words is "two hundred eighty-four thousand, one hundred forty-three".