421200321 has 8 divisors (see below), whose sum is σ = 580966080. Its totient is φ = 271117392.

The previous prime is 421200319. The next prime is 421200331. The reversal of 421200321 is 123002124.

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

It is not a de Polignac number, because 421200321 - 2¹ = 421200319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421200321.

It is not an unprimeable number, because it can be changed into a prime (421200301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2420605 + ... + 2420778.

It is an arithmetic number, because the mean of its divisors is an integer number (72620760).

Almost surely, 2^421200321 is an apocalyptic number.

It is an amenable number.

421200321 is a deficient number, since it is larger than the sum of its proper divisors (159765759).

421200321 is a wasteful number, since it uses less digits than its factorization.

421200321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4841415.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 421200321 is about 20523.1654722170. The cubic root of 421200321 is about 749.5999769022.

Adding to 421200321 its reverse (123002124), we get a palindrome (544202445).

The spelling of 421200321 in words is "four hundred twenty-one million, two hundred thousand, three hundred twenty-one".