542442 has 8 divisors (see below), whose sum is σ = 1084896. Its totient is φ = 180812.

The previous prime is 542441. The next prime is 542447. The reversal of 542442 is 244245.

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

542442 is an admirable number.

It is a plaindrome in base 15.

It is a zygodrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (542441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45198 + ... + 45209.

It is an arithmetic number, because the mean of its divisors is an integer number (135612).

2⁵⁴²⁴⁴² is an apocalyptic number.

542442 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.

542442 is a wasteful number, since it uses less digits than its factorization.

542442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90412.

The product of its digits is 1280, while the sum is 21.

The square root of 542442 is about 736.5066191149. The cubic root of 542442 is about 81.5550959207. Note that the first 3 decimals are identical.

Adding to 542442 its reverse (244245), we get a palindrome (786687).

The spelling of 542442 in words is "five hundred forty-two thousand, four hundred forty-two".