4213321 has 4 divisors (see below), whose sum is σ = 4815232. Its totient is φ = 3611412.

The previous prime is 4213309. The next prime is 4213333. The reversal of 4213321 is 1233124.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (4213309) and next prime (4213333).

It is not a de Polignac number, because 4213321 - 2¹³ = 4205129 is a prime.

It is a Duffinian number.

4213321 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4213295 and 4213304.

It is not an unprimeable number, because it can be changed into a prime (4210321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300945 + ... + 300958.

It is an arithmetic number, because the mean of its divisors is an integer number (1203808).

Almost surely, 2^4213321 is an apocalyptic number.

It is an amenable number.

4213321 is a deficient number, since it is larger than the sum of its proper divisors (601911).

4213321 is an equidigital number, since it uses as much as digits as its factorization.

4213321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601910.

The product of its digits is 144, while the sum is 16.

The square root of 4213321 is about 2052.6375715162. The cubic root of 4213321 is about 161.5132598454.

Adding to 4213321 its reverse (1233124), we get a palindrome (5446445).

The spelling of 4213321 in words is "four million, two hundred thirteen thousand, three hundred twenty-one".