500004021 has 8 divisors (see below), whose sum is σ = 727278624. Its totient is φ = 303032720.

The previous prime is 500003971. The next prime is 500004073. The reversal of 500004021 is 120400005.

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

It is a cyclic number.

It is not a de Polignac number, because 500004021 - 2⁷ = 500003893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 500003988 and 500004006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500004091) 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, 7575786 + ... + 7575851.

It is an arithmetic number, because the mean of its divisors is an integer number (90909828).

Almost surely, 2^500004021 is an apocalyptic number.

It is an amenable number.

500004021 is a deficient number, since it is larger than the sum of its proper divisors (227274603).

500004021 is a wasteful number, since it uses less digits than its factorization.

500004021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15151651.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 500004021 is about 22360.7696871105. The cubic root of 500004021 is about 793.7026536249.

Adding to 500004021 its reverse (120400005), we get a palindrome (620404026).

The spelling of 500004021 in words is "five hundred million, four thousand, twenty-one".