1321493 has 4 divisors (see below), whose sum is σ = 1327968. Its totient is φ = 1315020.

The previous prime is 1321487. The next prime is 1321513. The reversal of 1321493 is 3941231.

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.

It is a cyclic number.

It is not a de Polignac number, because 1321493 - 2⁴ = 1321477 is a prime.

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 (1321483) 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, 2921 + ... + 3342.

It is an arithmetic number, because the mean of its divisors is an integer number (331992).

2^1321493 is an apocalyptic number.

It is an amenable number.

1321493 is a deficient number, since it is larger than the sum of its proper divisors (6475).

1321493 is an equidigital number, since it uses as much as digits as its factorization.

1321493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6474.

The product of its digits is 648, while the sum is 23.

The square root of 1321493 is about 1149.5620905371. The cubic root of 1321493 is about 109.7374731233.

The spelling of 1321493 in words is "one million, three hundred twenty-one thousand, four hundred ninety-three".