843243 has 4 divisors (see below), whose sum is σ = 1124328. Its totient is φ = 562160.

The previous prime is 843229. The next prime is 843253. The reversal of 843243 is 342348.

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 843243 - 2⁵ = 843211 is a prime.

It is a super-2 number, since 2×843243² = 1422117514098, which contains 22 as substring.

It is a D-number.

843243 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (843253) 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, 140538 + ... + 140543.

It is an arithmetic number, because the mean of its divisors is an integer number (281082).

2⁸⁴³²⁴³ is an apocalyptic number.

843243 is a deficient number, since it is larger than the sum of its proper divisors (281085).

843243 is a wasteful number, since it uses less digits than its factorization.

843243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281084.

The product of its digits is 2304, while the sum is 24.

The square root of 843243 is about 918.2826362292. The cubic root of 843243 is about 94.4751481359.

The spelling of 843243 in words is "eight hundred forty-three thousand, two hundred forty-three".