540234 has 12 divisors (see below), whose sum is σ = 1170546. Its totient is φ = 180072.

The previous prime is 540233. The next prime is 540251. The reversal of 540234 is 432045.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 540225 + 9 = 735^2 + 3^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 30013 = 540234 / (5 + 4 + 0 + 2 + 3 + 4).

It is not an unprimeable number, because it can be changed into a prime (540233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14989 + ... + 15024.

2⁵⁴⁰²³⁴ is an apocalyptic number.

540234 is an abundant number, since it is smaller than the sum of its proper divisors (630312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

540234 is a wasteful number, since it uses less digits than its factorization.

540234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30021 (or 30018 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 540234 is about 735.0061224235. The cubic root of 540234 is about 81.4442892756. Note that the first 3 decimals are identical.

Adding to 540234 its reverse (432045), we get a palindrome (972279).

The spelling of 540234 in words is "five hundred forty thousand, two hundred thirty-four".