243059 has 4 divisors (see below), whose sum is σ = 245880. Its totient is φ = 240240.

The previous prime is 243031. The next prime is 243073. The reversal of 243059 is 950342.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243059 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 243059.

It is not an unprimeable number, because it can be changed into a prime (243259) 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, 1277 + ... + 1454.

It is an arithmetic number, because the mean of its divisors is an integer number (61470).

2²⁴³⁰⁵⁹ is an apocalyptic number.

243059 is a deficient number, since it is larger than the sum of its proper divisors (2821).

243059 is an equidigital number, since it uses as much as digits as its factorization.

243059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2820.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 243059 is about 493.0101418835. The cubic root of 243059 is about 62.4075646922.

The spelling of 243059 in words is "two hundred forty-three thousand, fifty-nine".