4070321 has 2 divisors, whose sum is σ = 4070322. Its totient is φ = 4070320.

The previous prime is 4070309. The next prime is 4070323. The reversal of 4070321 is 1230704.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3783025 + 287296 = 1945^2 + 536^2 .

It is a cyclic number.

It is not a de Polignac number, because 4070321 - 2¹⁸ = 3808177 is a prime.

Together with 4070323, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4070321.

It is not a weakly prime, because it can be changed into another prime (4070323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2035160 + 2035161.

It is an arithmetic number, because the mean of its divisors is an integer number (2035161).

Almost surely, 2^4070321 is an apocalyptic number.

It is an amenable number.

4070321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4070321 is an equidigital number, since it uses as much as digits as its factorization.

4070321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 4070321 is about 2017.5036555109. The cubic root of 4070321 is about 159.6649368399.

The spelling of 4070321 in words is "four million, seventy thousand, three hundred twenty-one".