10402321 has 2 divisors, whose sum is σ = 10402322. Its totient is φ = 10402320.

The previous prime is 10402319. The next prime is 10402331. The reversal of 10402321 is 12320401.

10402321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8620096 + 1782225 = 2936^2 + 1335^2 .

It is an emirp because it is prime and its reverse (12320401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10402321 - 2¹ = 10402319 is a prime.

Together with 10402319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10402331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5201160 + 5201161.

It is an arithmetic number, because the mean of its divisors is an integer number (5201161).

Almost surely, 2^10402321 is an apocalyptic number.

It is an amenable number.

10402321 is a deficient number, since it is larger than the sum of its proper divisors (1).

10402321 is an equidigital number, since it uses as much as digits as its factorization.

10402321 is an evil number, because the sum of its binary digits is even.

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

The square root of 10402321 is about 3225.2629350179. The cubic root of 10402321 is about 218.2948133716.

Adding to 10402321 its reverse (12320401), we get a palindrome (22722722).

The spelling of 10402321 in words is "ten million, four hundred two thousand, three hundred twenty-one".