242118 has 12 divisors (see below), whose sum is σ = 524628. Its totient is φ = 80700.

The previous prime is 242101. The next prime is 242119. The reversal of 242118 is 811242.

It is a super-2 number, since 2×242118² = 117242251848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 13451 = 242118 / (2 + 4 + 2 + 1 + 1 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 242118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242119) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6708 + ... + 6743.

It is an arithmetic number, because the mean of its divisors is an integer number (43719).

2²⁴²¹¹⁸ is an apocalyptic number.

242118 is an abundant number, since it is smaller than the sum of its proper divisors (282510).

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

242118 is a wasteful number, since it uses less digits than its factorization.

242118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13459 (or 13456 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 242118 is about 492.0548749886. The cubic root of 242118 is about 62.3269238233.

The spelling of 242118 in words is "two hundred forty-two thousand, one hundred eighteen".