540243203 has 4 divisors (see below), whose sum is σ = 540316848. Its totient is φ = 540169560.

The previous prime is 540243199. The next prime is 540243217. The reversal of 540243203 is 302342045.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302342045 = 5 ⋅60468409.

It is a cyclic number.

It is not a de Polignac number, because 540243203 - 2² = 540243199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540242203) 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, 24428 + ... + 40953.

It is an arithmetic number, because the mean of its divisors is an integer number (135079212).

Almost surely, 2^540243203 is an apocalyptic number.

540243203 is a deficient number, since it is larger than the sum of its proper divisors (73645).

540243203 is an equidigital number, since it uses as much as digits as its factorization.

540243203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73644.

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

The square root of 540243203 is about 23243.1323835665. The cubic root of 540243203 is about 814.4475174649.

Adding to 540243203 its reverse (302342045), we get a palindrome (842585248).

The spelling of 540243203 in words is "five hundred forty million, two hundred forty-three thousand, two hundred three".