200421305 has 8 divisors (see below), whose sum is σ = 274863552. Its totient is φ = 137431728.

The previous prime is 200421271. The next prime is 200421307. The reversal of 200421305 is 503124002.

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

It is not a de Polignac number, because 200421305 - 2¹⁰ = 200420281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200421307) 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, 2863127 + ... + 2863196.

It is an arithmetic number, because the mean of its divisors is an integer number (34357944).

Almost surely, 2^200421305 is an apocalyptic number.

It is an amenable number.

200421305 is a deficient number, since it is larger than the sum of its proper divisors (74442247).

200421305 is an equidigital number, since it uses as much as digits as its factorization.

200421305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5726335.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 200421305 is about 14157.0231687315. The cubic root of 200421305 is about 585.2138940734.

Adding to 200421305 its reverse (503124002), we get a palindrome (703545307).

The spelling of 200421305 in words is "two hundred million, four hundred twenty-one thousand, three hundred five".