423385 has 12 divisors (see below), whose sum is σ = 541548. Its totient is φ = 317696.

The previous prime is 423347. The next prime is 423389. The reversal of 423385 is 583324.

423385 is nontrivially palindromic in base 4.

It can be written as a sum of positive squares in 6 ways, for example, as 97344 + 326041 = 312^2 + 571^2 .

It is not a de Polignac number, because 423385 - 2⁷ = 423257 is a prime.

It is a Duffinian number.

423385 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (423389) 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, 1299 + ... + 1591.

It is an arithmetic number, because the mean of its divisors is an integer number (45129).

2⁴²³³⁸⁵ is an apocalyptic number.

It is an amenable number.

423385 is a deficient number, since it is larger than the sum of its proper divisors (118163).

423385 is a wasteful number, since it uses less digits than its factorization.

423385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332 (or 315 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 423385 is about 650.6804131062. The cubic root of 423385 is about 75.0893749341.

It can be divided in two parts, 423 and 385, that added together give a palindrome (808).

The spelling of 423385 in words is "four hundred twenty-three thousand, three hundred eighty-five".