1321043 has 4 divisors (see below), whose sum is σ = 1334760. Its totient is φ = 1307328.

The previous prime is 1321031. The next prime is 1321063. The reversal of 1321043 is 3401231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3401231 = 1499 ⋅2269.

It is a cyclic number.

It is not a de Polignac number, because 1321043 - 2¹⁰ = 1320019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321063) 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, 6713 + ... + 6906.

It is an arithmetic number, because the mean of its divisors is an integer number (333690).

2^1321043 is an apocalyptic number.

1321043 is a deficient number, since it is larger than the sum of its proper divisors (13717).

1321043 is an equidigital number, since it uses as much as digits as its factorization.

1321043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13716.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1321043 is about 1149.3663471670. The cubic root of 1321043 is about 109.7250156303.

Adding to 1321043 its reverse (3401231), we get a palindrome (4722274).

The spelling of 1321043 in words is "one million, three hundred twenty-one thousand, forty-three".