242142 has 8 divisors (see below), whose sum is σ = 484296. Its totient is φ = 80712.

The previous prime is 242129. The next prime is 242147. The reversal of 242142 is 241242.

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

242142 is an admirable 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 242142.

It is not an unprimeable number, because it can be changed into a prime (242147) by changing a digit.

242142 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20173 + ... + 20184.

It is an arithmetic number, because the mean of its divisors is an integer number (60537).

2²⁴²¹⁴² is an apocalyptic number.

242142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

242142 is a wasteful number, since it uses less digits than its factorization.

242142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40362.

The product of its digits is 128, while the sum is 15.

The square root of 242142 is about 492.0792619081. The cubic root of 242142 is about 62.3289831452.

Adding to 242142 its reverse (241242), we get a palindrome (483384).

Subtracting from 242142 its reverse (241242), we obtain a square (900 = 30²).

The spelling of 242142 in words is "two hundred forty-two thousand, one hundred forty-two", and thus it is an iban number.