504021424 has 20 divisors (see below), whose sum is σ = 993094920. Its totient is φ = 247738880.

The previous prime is 504021407. The next prime is 504021431. The reversal of 504021424 is 424120405.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 504021395 and 504021404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266017 + ... + 267904.

It is an arithmetic number, because the mean of its divisors is an integer number (49654746).

Almost surely, 2^504021424 is an apocalyptic number.

It is an amenable number.

504021424 is a deficient number, since it is larger than the sum of its proper divisors (489073496).

504021424 is a wasteful number, since it uses less digits than its factorization.

504021424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533988 (or 533982 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 504021424 is about 22450.4214659770. The cubic root of 504021424 is about 795.8227175203.

Adding to 504021424 its reverse (424120405), we get a palindrome (928141829).

The spelling of 504021424 in words is "five hundred four million, twenty-one thousand, four hundred twenty-four".