8040321 has 12 divisors (see below), whose sum is σ = 11653200. Its totient is φ = 5342040.

The previous prime is 8040311. The next prime is 8040323. The reversal of 8040321 is 1230408.

It is a happy number.

It is not a de Polignac number, because 8040321 - 2⁶ = 8040257 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8040294 and 8040303.

It is not an unprimeable number, because it can be changed into a prime (8040323) 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 in 11 ways as a sum of consecutive naturals, for example, 1630 + ... + 4328.

It is an arithmetic number, because the mean of its divisors is an integer number (971100).

Almost surely, 2^8040321 is an apocalyptic number.

It is an amenable number.

8040321 is a deficient number, since it is larger than the sum of its proper divisors (3612879).

8040321 is a wasteful number, since it uses less digits than its factorization.

8040321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3036 (or 3033 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 8040321 is about 2835.5459791723. The cubic root of 8040321 is about 200.3354454007.

Adding to 8040321 its reverse (1230408), we get a palindrome (9270729).

It can be divided in two parts, 80 and 40321, that added together give a square (40401 = 201²).

The spelling of 8040321 in words is "eight million, forty thousand, three hundred twenty-one".