1321293 has 4 divisors (see below), whose sum is σ = 1761728. Its totient is φ = 880860.

The previous prime is 1321289. The next prime is 1321301. The reversal of 1321293 is 3921231.

It is a happy number.

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: 3921231 = 3 ⋅1307077.

It is not a de Polignac number, because 1321293 - 2² = 1321289 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321213) 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, 220213 + ... + 220218.

It is an arithmetic number, because the mean of its divisors is an integer number (440432).

2^1321293 is an apocalyptic number.

It is an amenable number.

1321293 is a deficient number, since it is larger than the sum of its proper divisors (440435).

1321293 is an equidigital number, since it uses as much as digits as its factorization.

1321293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440434.

The product of its digits is 324, while the sum is 21.

The square root of 1321293 is about 1149.4750975989. The cubic root of 1321293 is about 109.7319368089.

The spelling of 1321293 in words is "one million, three hundred twenty-one thousand, two hundred ninety-three".