242753 has 4 divisors (see below), whose sum is σ = 277440. Its totient is φ = 208068.

The previous prime is 242747. The next prime is 242773. The reversal of 242753 is 357242.

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: 357242 = 2 ⋅178621.

It is not a de Polignac number, because 242753 - 2⁶ = 242689 is a prime.

It is a d-powerful number, because it can be written as 2¹⁵ + 4² + 7² + 2¹⁵ + 5 + 3¹¹ .

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (242713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17333 + ... + 17346.

It is an arithmetic number, because the mean of its divisors is an integer number (69360).

2²⁴²⁷⁵³ is an apocalyptic number.

It is an amenable number.

242753 is a deficient number, since it is larger than the sum of its proper divisors (34687).

242753 is an equidigital number, since it uses as much as digits as its factorization.

242753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34686.

The product of its digits is 1680, while the sum is 23.

The square root of 242753 is about 492.6997057032. The cubic root of 242753 is about 62.3813642849.

Adding to 242753 its reverse (357242), we get a palindrome (599995).

The spelling of 242753 in words is "two hundred forty-two thousand, seven hundred fifty-three".