242655 has 16 divisors (see below), whose sum is σ = 443904. Its totient is φ = 110880.

The previous prime is 242647. The next prime is 242659. The reversal of 242655 is 556242.

It is not a de Polignac number, because 242655 - 2³ = 242647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1051 + ... + 1260.

It is an arithmetic number, because the mean of its divisors is an integer number (27744).

2²⁴²⁶⁵⁵ is an apocalyptic number.

242655 is a deficient number, since it is larger than the sum of its proper divisors (201249).

242655 is a wasteful number, since it uses less digits than its factorization.

242655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2326.

The product of its digits is 2400, while the sum is 24.

The square root of 242655 is about 492.6002436053. The cubic root of 242655 is about 62.3729686502.

Adding to 242655 its reverse (556242), we get a palindrome (798897).

The spelling of 242655 in words is "two hundred forty-two thousand, six hundred fifty-five".