814421 has 4 divisors (see below), whose sum is σ = 822432. Its totient is φ = 806412.

The previous prime is 814403. The next prime is 814423. The reversal of 814421 is 124418.

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 a de Polignac number, because none of the positive numbers 2^k-814421 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 814393 and 814402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (814423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3851 + ... + 4056.

It is an arithmetic number, because the mean of its divisors is an integer number (205608).

2⁸¹⁴⁴²¹ is an apocalyptic number.

It is an amenable number.

814421 is a deficient number, since it is larger than the sum of its proper divisors (8011).

814421 is a wasteful number, since it uses less digits than its factorization.

814421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8010.

The product of its digits is 256, while the sum is 20.

The square root of 814421 is about 902.4527688472. The cubic root of 814421 is about 93.3862610797.

Adding to 814421 its reverse (124418), we get a palindrome (938839).

The spelling of 814421 in words is "eight hundred fourteen thousand, four hundred twenty-one".