426523 has 8 divisors (see below), whose sum is σ = 445536. Its totient is φ = 408000.

The previous prime is 426487. The next prime is 426527. The reversal of 426523 is 325624.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 426523 - 2⁹ = 426011 is a prime.

It is a Duffinian number.

426523 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 426494 and 426503.

It is not an unprimeable number, because it can be changed into a prime (426527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4090 + ... + 4192.

It is an arithmetic number, because the mean of its divisors is an integer number (55692).

2⁴²⁶⁵²³ is an apocalyptic number.

426523 is a deficient number, since it is larger than the sum of its proper divisors (19013).

426523 is a wasteful number, since it uses less digits than its factorization.

426523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245.

The product of its digits is 1440, while the sum is 22.

The square root of 426523 is about 653.0872836000. The cubic root of 426523 is about 75.2744316426.

It can be divided in two parts, 426 and 523, that added together give a palindrome (949).

The spelling of 426523 in words is "four hundred twenty-six thousand, five hundred twenty-three".