540042 has 8 divisors (see below), whose sum is σ = 1080096. Its totient is φ = 180012.

The previous prime is 540041. The next prime is 540061. The reversal of 540042 is 240045.

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

540042 is an admirable number.

It is a super-3 number, since 3×540042³ = 472502233373262264, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (540041) 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, 44998 + ... + 45009.

It is an arithmetic number, because the mean of its divisors is an integer number (135012).

2⁵⁴⁰⁰⁴² is an apocalyptic number.

540042 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.

540042 is a wasteful number, since it uses less digits than its factorization.

540042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90012.

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 540042 is about 734.8754996596. The cubic root of 540042 is about 81.4346396568.

Adding to 540042 its reverse (240045), we get a palindrome (780087).

The spelling of 540042 in words is "five hundred forty thousand, forty-two".