243229 has 4 divisors (see below), whose sum is σ = 277984. Its totient is φ = 208476.

The previous prime is 243227. The next prime is 243233. The reversal of 243229 is 922342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 922342 = 2 ⋅461171.

It is a cyclic number.

It is not a de Polignac number, because 243229 - 2¹ = 243227 is a prime.

243229 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243227) 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 in 3 ways as a sum of consecutive naturals, for example, 17367 + ... + 17380.

It is an arithmetic number, because the mean of its divisors is an integer number (69496).

2²⁴³²²⁹ is an apocalyptic number.

It is an amenable number.

243229 is a deficient number, since it is larger than the sum of its proper divisors (34755).

243229 is an equidigital number, since it uses as much as digits as its factorization.

243229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34754.

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

The square root of 243229 is about 493.1825219936. The cubic root of 243229 is about 62.4221109731.

The spelling of 243229 in words is "two hundred forty-three thousand, two hundred twenty-nine".