321426 has 24 divisors (see below), whose sum is σ = 796224. Its totient is φ = 91800.

The previous prime is 321413. The next prime is 321427. The reversal of 321426 is 624123.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a d-powerful number, because it can be written as 3¹⁰ + 2¹⁷ + 4² + 1 + 2¹⁷ + 6³ .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 321399 and 321408.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 321426.

It is not an unprimeable number, because it can be changed into a prime (321427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1150 + ... + 1401.

It is an arithmetic number, because the mean of its divisors is an integer number (33176).

2³²¹⁴²⁶ is an apocalyptic number.

321426 is an abundant number, since it is smaller than the sum of its proper divisors (474798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321426 is a wasteful number, since it uses less digits than its factorization.

321426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2566 (or 2563 counting only the distinct ones).

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

The square root of 321426 is about 566.9444417225. The cubic root of 321426 is about 68.5004883905.

Adding to 321426 its reverse (624123), we get a palindrome (945549).

It can be divided in two parts, 3214 and 26, that added together give a triangular number (3240 = T₈₀).

The spelling of 321426 in words is "three hundred twenty-one thousand, four hundred twenty-six".