518042 has 8 divisors (see below), whose sum is σ = 888096. Its totient is φ = 222012.

The previous prime is 518017. The next prime is 518047. The reversal of 518042 is 240815.

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

It is not an unprimeable number, because it can be changed into a prime (518047) by changing a digit.

518042 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18488 + ... + 18515.

It is an arithmetic number, because the mean of its divisors is an integer number (111012).

2⁵¹⁸⁰⁴² is an apocalyptic number.

518042 is a deficient number, since it is larger than the sum of its proper divisors (370054).

518042 is a wasteful number, since it uses less digits than its factorization.

518042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37012.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 518042 is about 719.7513459522. The cubic root of 518042 is about 80.3134576993.

Adding to 518042 its reverse (240815), we get a palindrome (758857).

The spelling of 518042 in words is "five hundred eighteen thousand, forty-two".