242393 has 2 divisors, whose sum is σ = 242394. Its totient is φ = 242392.

The previous prime is 242377. The next prime is 242399. The reversal of 242393 is 393242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170569 + 71824 = 413^2 + 268^2 .

It is a cyclic number.

It is not a de Polignac number, because 242393 - 2⁴ = 242377 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242399) 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 as a sum of consecutive naturals, namely, 121196 + 121197.

It is an arithmetic number, because the mean of its divisors is an integer number (121197).

2²⁴²³⁹³ is an apocalyptic number.

It is an amenable number.

242393 is a deficient number, since it is larger than the sum of its proper divisors (1).

242393 is an equidigital number, since it uses as much as digits as its factorization.

242393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 23.

The square root of 242393 is about 492.3342360633. The cubic root of 242393 is about 62.3505120721.

It can be divided in two parts, 24239 and 3, that added together give a palindrome (24242).

The spelling of 242393 in words is "two hundred forty-two thousand, three hundred ninety-three".