814321 has 4 divisors (see below), whose sum is σ = 857200. Its totient is φ = 771444.

The previous prime is 814309. The next prime is 814327. The reversal of 814321 is 123418.

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 814321 - 2⁷ = 814193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 42859 = 814321 / (8 + 1 + 4 + 3 + 2 + 1).

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (814327) 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, 21411 + ... + 21448.

It is an arithmetic number, because the mean of its divisors is an integer number (214300).

2⁸¹⁴³²¹ is an apocalyptic number.

It is an amenable number.

814321 is a deficient number, since it is larger than the sum of its proper divisors (42879).

814321 is a wasteful number, since it uses less digits than its factorization.

814321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42878.

The product of its digits is 192, while the sum is 19.

The square root of 814321 is about 902.3973625848. The cubic root of 814321 is about 93.3824387288.

Adding to 814321 its reverse (123418), we get a palindrome (937739).

The spelling of 814321 in words is "eight hundred fourteen thousand, three hundred twenty-one".