4201321 has 2 divisors, whose sum is σ = 4201322. Its totient is φ = 4201320.

The previous prime is 4201319. The next prime is 4201343. The reversal of 4201321 is 1231024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3279721 + 921600 = 1811^2 + 960^2 .

It is a cyclic number.

It is not a de Polignac number, because 4201321 - 2¹ = 4201319 is a prime.

Together with 4201319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4201391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2100660 + 2100661.

It is an arithmetic number, because the mean of its divisors is an integer number (2100661).

Almost surely, 2^4201321 is an apocalyptic number.

It is an amenable number.

4201321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4201321 is an equidigital number, since it uses as much as digits as its factorization.

4201321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 4201321 is about 2049.7124188529. The cubic root of 4201321 is about 161.3597782201.

Adding to 4201321 its reverse (1231024), we get a palindrome (5432345).

The spelling of 4201321 in words is "four million, two hundred one thousand, three hundred twenty-one".