326421 has 6 divisors (see below), whose sum is σ = 471510. Its totient is φ = 217608.

The previous prime is 326369. The next prime is 326437. The reversal of 326421 is 124623.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 324900 + 1521 = 570^2 + 39^2 .

It is not a de Polignac number, because 326421 - 2¹³ = 318229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 326394 and 326403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326441) 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 5 ways as a sum of consecutive naturals, for example, 18126 + ... + 18143.

It is an arithmetic number, because the mean of its divisors is an integer number (78585).

2³²⁶⁴²¹ is an apocalyptic number.

It is an amenable number.

326421 is a deficient number, since it is larger than the sum of its proper divisors (145089).

326421 is a wasteful number, since it uses less digits than its factorization.

326421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36275 (or 36272 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 326421 is about 571.3326526639. The cubic root of 326421 is about 68.8535014033.

It can be divided in two parts, 326 and 421, that added together give a palindrome (747).

The spelling of 326421 in words is "three hundred twenty-six thousand, four hundred twenty-one".