243266 has 4 divisors (see below), whose sum is σ = 364902. Its totient is φ = 121632.

The previous prime is 243263. The next prime is 243301. The reversal of 243266 is 662342.

243266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 662342 = 2 ⋅331171.

It can be written as a sum of positive squares in only one way, i.e., 137641 + 105625 = 371^2 + 325^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 243266.

It is not an unprimeable number, because it can be changed into a prime (243263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60815 + ... + 60818.

2²⁴³²⁶⁶ is an apocalyptic number.

243266 is a deficient number, since it is larger than the sum of its proper divisors (121636).

243266 is a wasteful number, since it uses less digits than its factorization.

243266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121635.

The product of its digits is 1728, while the sum is 23.

The square root of 243266 is about 493.2200320344. The cubic root of 243266 is about 62.4252760302.

The spelling of 243266 in words is "two hundred forty-three thousand, two hundred sixty-six".