503420404 has 6 divisors (see below), whose sum is σ = 880985714. Its totient is φ = 251710200.

The previous prime is 503420387. The next prime is 503420441. The reversal of 503420404 is 404024305.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 501312100 + 2108304 = 22390^2 + 1452^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62927547 + ... + 62927554.

Almost surely, 2^503420404 is an apocalyptic number.

It is an amenable number.

503420404 is a deficient number, since it is larger than the sum of its proper divisors (377565310).

503420404 is a wasteful number, since it uses less digits than its factorization.

503420404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125855105 (or 125855103 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 503420404 is about 22437.0319784057. The cubic root of 503420404 is about 795.5062656188.

Adding to 503420404 its reverse (404024305), we get a palindrome (907444709).

The spelling of 503420404 in words is "five hundred three million, four hundred twenty thousand, four hundred four".