242743 has 8 divisors (see below), whose sum is σ = 261360. Its totient is φ = 224640.

The previous prime is 242731. The next prime is 242747. The reversal of 242743 is 347242.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242743 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242747) 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 7 ways as a sum of consecutive naturals, for example, 1788 + ... + 1918.

It is an arithmetic number, because the mean of its divisors is an integer number (32670).

2²⁴²⁷⁴³ is an apocalyptic number.

242743 is a deficient number, since it is larger than the sum of its proper divisors (18617).

242743 is a wasteful number, since it uses less digits than its factorization.

242743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257.

The product of its digits is 1344, while the sum is 22.

The square root of 242743 is about 492.6895574294. The cubic root of 242743 is about 62.3805076910.

Adding to 242743 its reverse (347242), we get a palindrome (589985).

The spelling of 242743 in words is "two hundred forty-two thousand, seven hundred forty-three", and thus it is an iban number.