243265 has 8 divisors (see below), whose sum is σ = 318528. Its totient is φ = 176880.

The previous prime is 243263. The next prime is 243301. The reversal of 243265 is 562342.

It is a happy number.

243265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 243265 - 2¹ = 243263 is a prime.

It is a Duffinian number.

243265 is a lucky number.

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 in 7 ways as a sum of consecutive naturals, for example, 2157 + ... + 2266.

It is an arithmetic number, because the mean of its divisors is an integer number (39816).

2²⁴³²⁶⁵ is an apocalyptic number.

It is an amenable number.

243265 is a deficient number, since it is larger than the sum of its proper divisors (75263).

243265 is a wasteful number, since it uses less digits than its factorization.

243265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4439.

The product of its digits is 1440, while the sum is 22.

The square root of 243265 is about 493.2190182870. The cubic root of 243265 is about 62.4251904923.

The spelling of 243265 in words is "two hundred forty-three thousand, two hundred sixty-five".