242493 has 4 divisors (see below), whose sum is σ = 323328. Its totient is φ = 161660.

The previous prime is 242491. The next prime is 242509. The reversal of 242493 is 394242.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 242493 - 2¹ = 242491 is a prime.

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242491) 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, 40413 + ... + 40418.

It is an arithmetic number, because the mean of its divisors is an integer number (80832).

2²⁴²⁴⁹³ is an apocalyptic number.

It is an amenable number.

242493 is a deficient number, since it is larger than the sum of its proper divisors (80835).

242493 is an equidigital number, since it uses as much as digits as its factorization.

242493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80834.

The product of its digits is 1728, while the sum is 24.

The square root of 242493 is about 492.4357826154. The cubic root of 242493 is about 62.3590851937.

The spelling of 242493 in words is "two hundred forty-two thousand, four hundred ninety-three".