242423 has 4 divisors (see below), whose sum is σ = 244200. Its totient is φ = 240648.

The previous prime is 242419. The next prime is 242441. The reversal of 242423 is 324242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 242423 - 2² = 242419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665 + ... + 962.

It is an arithmetic number, because the mean of its divisors is an integer number (61050).

2²⁴²⁴²³ is an apocalyptic number.

242423 is a deficient number, since it is larger than the sum of its proper divisors (1777).

242423 is a wasteful number, since it uses less digits than its factorization.

242423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776.

The product of its digits is 384, while the sum is 17.

The square root of 242423 is about 492.3647022279. The cubic root of 242423 is about 62.3530842562.

Adding to 242423 its reverse (324242), we get a palindrome (566665).

The spelling of 242423 in words is "two hundred forty-two thousand, four hundred twenty-three", and thus it is an iban number.