426403 has 4 divisors (see below), whose sum is σ = 427720. Its totient is φ = 425088.

The previous prime is 426401. The next prime is 426407. The reversal of 426403 is 304624.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 426403 - 2¹ = 426401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426401) 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, 208 + ... + 946.

It is an arithmetic number, because the mean of its divisors is an integer number (106930).

2⁴²⁶⁴⁰³ is an apocalyptic number.

426403 is a deficient number, since it is larger than the sum of its proper divisors (1317).

426403 is an equidigital number, since it uses as much as digits as its factorization.

426403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 426403 is about 652.9954058031. The cubic root of 426403 is about 75.2673716254.

The spelling of 426403 in words is "four hundred twenty-six thousand, four hundred three".