243094 has 4 divisors (see below), whose sum is σ = 364644. Its totient is φ = 121546.

The previous prime is 243091. The next prime is 243101. The reversal of 243094 is 490342.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 490342 = 2 ⋅245171.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60772 + ... + 60775.

It is an arithmetic number, because the mean of its divisors is an integer number (91161).

2²⁴³⁰⁹⁴ is an apocalyptic number.

243094 is a deficient number, since it is larger than the sum of its proper divisors (121550).

243094 is a wasteful number, since it uses less digits than its factorization.

243094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121549.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 243094 is about 493.0456368329. The cubic root of 243094 is about 62.4105600690.

The spelling of 243094 in words is "two hundred forty-three thousand, ninety-four".