84000243 has 16 divisors (see below), whose sum is σ = 113861376. Its totient is φ = 55077600.

The previous prime is 84000227. The next prime is 84000251. The reversal of 84000243 is 34200048.

It is a happy number.

It is not a de Polignac number, because 84000243 - 2⁴ = 84000227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84000223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47605 + ... + 49337.

It is an arithmetic number, because the mean of its divisors is an integer number (7116336).

Almost surely, 2^84000243 is an apocalyptic number.

84000243 is a deficient number, since it is larger than the sum of its proper divisors (29861133).

84000243 is a wasteful number, since it uses less digits than its factorization.

84000243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994.

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

The square root of 84000243 is about 9165.1646466389. The cubic root of 84000243 is about 437.9523362992.

The spelling of 84000243 in words is "eighty-four million, two hundred forty-three", and thus it is an aban number.