84243 has 4 divisors (see below), whose sum is σ = 112328. Its totient is φ = 56160.

The previous prime is 84239. The next prime is 84247. The reversal of 84243 is 34248.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (84239) and next prime (84247).

It is not a de Polignac number, because 84243 - 2² = 84239 is a prime.

It is a d-powerful number, because it can be written as 8 + 4⁷ + 2⁷ + 4⁸ + 3⁷ .

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14038 + ... + 14043.

It is an arithmetic number, because the mean of its divisors is an integer number (28082).

2⁸⁴²⁴³ is an apocalyptic number.

84243 is a deficient number, since it is larger than the sum of its proper divisors (28085).

84243 is a wasteful number, since it uses less digits than its factorization.

84243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28084.

The product of its digits is 768, while the sum is 21.

The square root of 84243 is about 290.2464470067. The cubic root of 84243 is about 43.8373818188.

The spelling of 84243 in words is "eighty-four thousand, two hundred forty-three".