42242 has 4 divisors (see below), whose sum is σ = 63366. Its totient is φ = 21120.

The previous prime is 42239. The next prime is 42257. The reversal of 42242 is 24224.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 32041 + 10201 = 179^2 + 101^2 .

It is a d-powerful number, because it can be written as 4⁴ + 2 + 2¹³ + 4⁵ + 2¹⁵ .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 42242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10559 + ... + 10562.

2⁴²²⁴² is an apocalyptic number.

42242 is a deficient number, since it is larger than the sum of its proper divisors (21124).

42242 is a wasteful number, since it uses less digits than its factorization.

42242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21123.

The product of its digits is 128, while the sum is 14.

The square root of 42242 is about 205.5285868194. The cubic root of 42242 is about 34.8269004143.

Adding to 42242 its reverse (24224), we get a palindrome (66466).

It can be divided in two parts, 4224 and 2, that multiplied together give a palindrome (8448).

The spelling of 42242 in words is "forty-two thousand, two hundred forty-two", and thus it is an iban number.