426443 has 4 divisors (see below), whose sum is σ = 445008. Its totient is φ = 407880.

The previous prime is 426427. The next prime is 426469. The reversal of 426443 is 344624.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 426443 - 2⁴ = 426427 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 18541 = 426443 / (4 + 2 + 6 + 4 + 4 + 3).

It is a d-powerful number, because it can be written as 4⁷ + 2¹⁷ + 4⁷ + 6³ + 4⁹ + 3⁵ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426743) 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, 9248 + ... + 9293.

It is an arithmetic number, because the mean of its divisors is an integer number (111252).

2⁴²⁶⁴⁴³ is an apocalyptic number.

426443 is a deficient number, since it is larger than the sum of its proper divisors (18565).

426443 is a wasteful number, since it uses less digits than its factorization.

426443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18564.

The product of its digits is 2304, while the sum is 23.

The square root of 426443 is about 653.0260331717. The cubic root of 426443 is about 75.2697251116.

The spelling of 426443 in words is "four hundred twenty-six thousand, four hundred forty-three".