504240143 has 4 divisors (see below), whose sum is σ = 550080168. Its totient is φ = 458400120.

The previous prime is 504240133. The next prime is 504240223. The reversal of 504240143 is 341042405.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-504240143 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504240133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22919996 + ... + 22920017.

It is an arithmetic number, because the mean of its divisors is an integer number (137520042).

Almost surely, 2^504240143 is an apocalyptic number.

504240143 is a deficient number, since it is larger than the sum of its proper divisors (45840025).

504240143 is a wasteful number, since it uses less digits than its factorization.

504240143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45840024.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 504240143 is about 22455.2920934019. The cubic root of 504240143 is about 795.9378160517.

Adding to 504240143 its reverse (341042405), we get a palindrome (845282548).

The spelling of 504240143 in words is "five hundred four million, two hundred forty thousand, one hundred forty-three".