1282321 has 4 divisors (see below), whose sum is σ = 1290352. Its totient is φ = 1274292.

The previous prime is 1282297. The next prime is 1282343. The reversal of 1282321 is 1232821.

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: 1232821 = 1013 ⋅1217.

It is a cyclic number.

It is not a de Polignac number, because 1282321 - 2⁵ = 1282289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1282381) 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, 3771 + ... + 4096.

It is an arithmetic number, because the mean of its divisors is an integer number (322588).

2^1282321 is an apocalyptic number.

It is an amenable number.

1282321 is a deficient number, since it is larger than the sum of its proper divisors (8031).

1282321 is an equidigital number, since it uses as much as digits as its factorization.

1282321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8030.

The product of its digits is 192, while the sum is 19.

The square root of 1282321 is about 1132.3961321022. The cubic root of 1282321 is about 108.6422917381.

The spelling of 1282321 in words is "one million, two hundred eighty-two thousand, three hundred twenty-one".