540043 has 8 divisors (see below), whose sum is σ = 622080. Its totient is φ = 459240.

The previous prime is 540041. The next prime is 540061. The reversal of 540043 is 340045.

540043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 540043 - 2¹ = 540041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 539999 and 540026.

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 7 ways as a sum of consecutive naturals, for example, 1038 + ... + 1468.

It is an arithmetic number, because the mean of its divisors is an integer number (77760).

2⁵⁴⁰⁰⁴³ is an apocalyptic number.

540043 is a deficient number, since it is larger than the sum of its proper divisors (82037).

540043 is a wasteful number, since it uses less digits than its factorization.

540043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 540043 is about 734.8761800467. The cubic root of 540043 is about 81.4346899212.

Adding to 540043 its reverse (340045), we get a palindrome (880088).

The spelling of 540043 in words is "five hundred forty thousand, forty-three".