242255 has 8 divisors (see below), whose sum is σ = 313152. Its totient is φ = 178848.

The previous prime is 242243. The next prime is 242257. The reversal of 242255 is 552242.

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

It is a cyclic number.

It is not a de Polignac number, because 242255 - 2¹² = 238159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 242255.

It is not an unprimeable number, because it can be changed into a prime (242257) 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, 1799 + ... + 1928.

It is an arithmetic number, because the mean of its divisors is an integer number (39144).

2²⁴²²⁵⁵ is an apocalyptic number.

242255 is a deficient number, since it is larger than the sum of its proper divisors (70897).

242255 is a wasteful number, since it uses less digits than its factorization.

242255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3745.

The product of its digits is 800, while the sum is 20.

The square root of 242255 is about 492.1940674165. The cubic root of 242255 is about 62.3386772913.

Adding to 242255 its reverse (552242), we get a palindrome (794497).

The spelling of 242255 in words is "two hundred forty-two thousand, two hundred fifty-five".