242042 has 4 divisors (see below), whose sum is σ = 363066.
Its totient is φ = 121020.
The previous prime is 242009. The next prime is 242057. The reversal of 242042 is 240242.
Adding to 242042 its reverse (240242), we get a palindrome (482284).
It is a happy number.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240242 = 2 ⋅120121.
It can be written as a sum of positive squares in only one way, i.e., 241081 + 961 = 491^2 + 31^2
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60509 + ... + 60512.
2242042 is an apocalyptic number.
242042 is a deficient number, since it is larger than the sum of its proper divisors (121024).
242042 is a wasteful number, since it uses less digits than its factorization.
242042 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 121023.
The product of its (nonzero) digits is 128, while the sum is 14.
The square root of 242042 is about 491.9776417684.
The cubic root of 242042 is about 62.3204017391.
The spelling of 242042 in words is "two hundred forty-two thousand, forty-two", and thus it is an iban number.