504213421 has 8 divisors (see below), whose sum is σ = 534695040. Its totient is φ = 473823168.

The previous prime is 504213397. The next prime is 504213439. The reversal of 504213421 is 124312405.

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 504213421 - 2¹⁵ = 504180653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 504213392 and 504213401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504513421) 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, 11301 + ... + 33706.

It is an arithmetic number, because the mean of its divisors is an integer number (66836880).

Almost surely, 2^504213421 is an apocalyptic number.

It is an amenable number.

504213421 is a deficient number, since it is larger than the sum of its proper divisors (30481619).

504213421 is a wasteful number, since it uses less digits than its factorization.

504213421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45683.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 504213421 is about 22454.6970810118. The cubic root of 504213421 is about 795.9237556704.

Adding to 504213421 its reverse (124312405), we get a palindrome (628525826).

The spelling of 504213421 in words is "five hundred four million, two hundred thirteen thousand, four hundred twenty-one".