1026321 has 4 divisors (see below), whose sum is σ = 1368432. Its totient is φ = 684212.

The previous prime is 1026313. The next prime is 1026331. The reversal of 1026321 is 1236201.

1026321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1236201 = 3 ⋅412067.

It is a cyclic number.

It is not a de Polignac number, because 1026321 - 2³ = 1026313 is a prime.

It is a D-number.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1026321.

It is not an unprimeable number, because it can be changed into a prime (1026331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171051 + ... + 171056.

It is an arithmetic number, because the mean of its divisors is an integer number (342108).

2^1026321 is an apocalyptic number.

It is an amenable number.

1026321 is a deficient number, since it is larger than the sum of its proper divisors (342111).

1026321 is an equidigital number, since it uses as much as digits as its factorization.

1026321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342110.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1026321 is about 1013.0750219011. The cubic root of 1026321 is about 100.8697795683.

The spelling of 1026321 in words is "one million, twenty-six thousand, three hundred twenty-one".