242985 has 16 divisors (see below), whose sum is σ = 395136. Its totient is φ = 127488.

The previous prime is 242971. The next prime is 242989. The reversal of 242985 is 589242.

It is not a de Polignac number, because 242985 - 2⁸ = 242729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242989) 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, 1372 + ... + 1538.

It is an arithmetic number, because the mean of its divisors is an integer number (24696).

2²⁴²⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

242985 is a deficient number, since it is larger than the sum of its proper divisors (152151).

242985 is a wasteful number, since it uses less digits than its factorization.

242985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272.

The product of its digits is 5760, while the sum is 30.

The square root of 242985 is about 492.9350870044. The cubic root of 242985 is about 62.4012306628.

The spelling of 242985 in words is "two hundred forty-two thousand, nine hundred eighty-five".