540304043 has 4 divisors (see below), whose sum is σ = 542030568. Its totient is φ = 538577520.

The previous prime is 540304033. The next prime is 540304069. The reversal of 540304043 is 340403045.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 540304043 - 2¹⁶ = 540238507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540304003) 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, 862793 + ... + 863418.

It is an arithmetic number, because the mean of its divisors is an integer number (135507642).

Almost surely, 2^540304043 is an apocalyptic number.

540304043 is a deficient number, since it is larger than the sum of its proper divisors (1726525).

540304043 is a wasteful number, since it uses less digits than its factorization.

540304043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726524.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 540304043 is about 23244.4411204055. The cubic root of 540304043 is about 814.4780895768.

Adding to 540304043 its reverse (340403045), we get a palindrome (880707088).

The spelling of 540304043 in words is "five hundred forty million, three hundred four thousand, forty-three".