304200421 has 8 divisors (see below), whose sum is σ = 357054080. Its totient is φ = 253695888.

The previous prime is 304200409. The next prime is 304200437. The reversal of 304200421 is 124002403.

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 304200421 - 2⁷ = 304200293 is a prime.

It is a super-2 number, since 2×304200421² = 185075792273154482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 304200395 and 304200404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304200521) 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, 587001 + ... + 587518.

It is an arithmetic number, because the mean of its divisors is an integer number (44631760).

Almost surely, 2^304200421 is an apocalyptic number.

It is an amenable number.

304200421 is a deficient number, since it is larger than the sum of its proper divisors (52853659).

304200421 is a wasteful number, since it uses less digits than its factorization.

304200421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174563.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 304200421 is about 17441.3422935278. The cubic root of 304200421 is about 672.5428143534.

Adding to 304200421 its reverse (124002403), we get a palindrome (428202824).

The spelling of 304200421 in words is "three hundred four million, two hundred thousand, four hundred twenty-one".