504425421 has 16 divisors (see below), whose sum is σ = 749195200. Its totient is φ = 335429424.

The previous prime is 504425417. The next prime is 504425423. The reversal of 504425421 is 124524405.

It is not a de Polignac number, because 504425421 - 2² = 504425417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504425423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12811 + ... + 34248.

It is an arithmetic number, because the mean of its divisors is an integer number (46824700).

Almost surely, 2^504425421 is an apocalyptic number.

It is an amenable number.

504425421 is a deficient number, since it is larger than the sum of its proper divisors (244769779).

504425421 is a wasteful number, since it uses less digits than its factorization.

504425421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47465 (or 47459 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 504425421 is about 22459.4172008091. The cubic root of 504425421 is about 796.0352905787.

Adding to 504425421 its reverse (124524405), we get a palindrome (628949826).

The spelling of 504425421 in words is "five hundred four million, four hundred twenty-five thousand, four hundred twenty-one".