540434 has 4 divisors (see below), whose sum is σ = 810654. Its totient is φ = 270216.

The previous prime is 540433. The next prime is 540437. The reversal of 540434 is 434045.

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., 494209 + 46225 = 703^2 + 215^2 .

It is not an unprimeable number, because it can be changed into a prime (540433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135107 + ... + 135110.

2⁵⁴⁰⁴³⁴ is an apocalyptic number.

540434 is a deficient number, since it is larger than the sum of its proper divisors (270220).

540434 is a wasteful number, since it uses less digits than its factorization.

540434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270219.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 540434 is about 735.1421631222. The cubic root of 540434 is about 81.4543385309.

Adding to 540434 its reverse (434045), we get a palindrome (974479).

The spelling of 540434 in words is "five hundred forty thousand, four hundred thirty-four".