1080321 has 16 divisors (see below), whose sum is σ = 1655040. Its totient is φ = 619920.

The previous prime is 1080311. The next prime is 1080329. The reversal of 1080321 is 1230801.

It is a happy number.

It is not a de Polignac number, because 1080321 - 2⁹ = 1079809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1080321.

It is not an unprimeable number, because it can be changed into a prime (1080329) 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 15 ways as a sum of consecutive naturals, for example, 235 + ... + 1488.

It is an arithmetic number, because the mean of its divisors is an integer number (103440).

2^1080321 is an apocalyptic number.

1080321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1080321 is a deficient number, since it is larger than the sum of its proper divisors (574719).

1080321 is a wasteful number, since it uses less digits than its factorization.

1080321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1080321 is about 1039.3849142642. The cubic root of 1080321 is about 102.6087206507.

The spelling of 1080321 in words is "one million, eighty thousand, three hundred twenty-one".