43243 has 4 divisors (see below), whose sum is σ = 43848. Its totient is φ = 42640.

The previous prime is 43237. The next prime is 43261. The reversal of 43243 is 34234.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34234 = 2 ⋅17117.

It is a cyclic number.

It is not a de Polignac number, because 43243 - 2¹³ = 35051 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (43223) 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, 178 + ... + 343.

It is an arithmetic number, because the mean of its divisors is an integer number (10962).

2⁴³²⁴³ is an apocalyptic number.

43243 is a deficient number, since it is larger than the sum of its proper divisors (605).

43243 is an equidigital number, since it uses as much as digits as its factorization.

43243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604.

The product of its digits is 288, while the sum is 16.

The square root of 43243 is about 207.9495131035. The cubic root of 43243 is about 35.0998509205.

Adding to 43243 its reverse (34234), we get a palindrome (77477).

Subtracting from 43243 its reverse (34234), we obtain a palindrome (9009).

The spelling of 43243 in words is "forty-three thousand, two hundred forty-three", and thus it is an iban number.