242838 has 20 divisors (see below), whose sum is σ = 544500. Its totient is φ = 80892.

The previous prime is 242819. The next prime is 242863. The reversal of 242838 is 838242.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 588 + ... + 911.

It is an arithmetic number, because the mean of its divisors is an integer number (27225).

2²⁴²⁸³⁸ is an apocalyptic number.

242838 is an abundant number, since it is smaller than the sum of its proper divisors (301662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242838 is a wasteful number, since it uses less digits than its factorization.

242838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513 (or 1504 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 242838 is about 492.7859575921. The cubic root of 242838 is about 62.3886443833.

The spelling of 242838 in words is "two hundred forty-two thousand, eight hundred thirty-eight".