540042501 has 4 divisors (see below), whose sum is σ = 720056672. Its totient is φ = 360028332.

The previous prime is 540042497. The next prime is 540042511. The reversal of 540042501 is 105240045.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 540042501 - 2² = 540042497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540042511) 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, 90007081 + ... + 90007086.

It is an arithmetic number, because the mean of its divisors is an integer number (180014168).

Almost surely, 2^540042501 is an apocalyptic number.

It is an amenable number.

540042501 is a deficient number, since it is larger than the sum of its proper divisors (180014171).

540042501 is a wasteful number, since it uses less digits than its factorization.

540042501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180014170.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 540042501 is about 23238.8145351694. The cubic root of 540042501 is about 814.3466483927.

Adding to 540042501 its reverse (105240045), we get a palindrome (645282546).

The spelling of 540042501 in words is "five hundred forty million, forty-two thousand, five hundred one".