504043421 has 8 divisors (see below), whose sum is σ = 609935040. Its totient is φ = 406623168.

The previous prime is 504043417. The next prime is 504043439. The reversal of 504043421 is 124340405.

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

It is not a de Polignac number, because 504043421 - 2² = 504043417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504043471) 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, 2117711 + ... + 2117948.

It is an arithmetic number, because the mean of its divisors is an integer number (76241880).

Almost surely, 2^504043421 is an apocalyptic number.

It is an amenable number.

504043421 is a deficient number, since it is larger than the sum of its proper divisors (105891619).

504043421 is a wasteful number, since it uses less digits than its factorization.

504043421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4235683.

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

The square root of 504043421 is about 22450.9113623479. The cubic root of 504043421 is about 795.8342947118.

Adding to 504043421 its reverse (124340405), we get a palindrome (628383826).

The spelling of 504043421 in words is "five hundred four million, forty-three thousand, four hundred twenty-one".