1421393 has 4 divisors (see below), whose sum is σ = 1429428. Its totient is φ = 1413360.

The previous prime is 1421389. The next prime is 1421401. The reversal of 1421393 is 3931241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21904 + 1399489 = 148^2 + 1183^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421393 - 2² = 1421389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1421093) 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, 3746 + ... + 4107.

It is an arithmetic number, because the mean of its divisors is an integer number (357357).

2^1421393 is an apocalyptic number.

It is an amenable number.

1421393 is a deficient number, since it is larger than the sum of its proper divisors (8035).

1421393 is an equidigital number, since it uses as much as digits as its factorization.

1421393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8034.

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

The square root of 1421393 is about 1192.2218753235. The cubic root of 1421393 is about 112.4358284232.

The spelling of 1421393 in words is "one million, four hundred twenty-one thousand, three hundred ninety-three".