427321 has 4 divisors (see below), whose sum is σ = 428944. Its totient is φ = 425700.

The previous prime is 427309. The next prime is 427327. The reversal of 427321 is 123724.

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 427321 - 2¹¹ = 425273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427327) 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, 315 + ... + 976.

It is an arithmetic number, because the mean of its divisors is an integer number (107236).

2⁴²⁷³²¹ is an apocalyptic number.

It is an amenable number.

427321 is a deficient number, since it is larger than the sum of its proper divisors (1623).

427321 is a wasteful number, since it uses less digits than its factorization.

427321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1622.

The product of its digits is 336, while the sum is 19.

The square root of 427321 is about 653.6979424780. The cubic root of 427321 is about 75.3213471067.

The spelling of 427321 in words is "four hundred twenty-seven thousand, three hundred twenty-one", and thus it is an iban number.