423340 has 24 divisors (see below), whose sum is σ = 906192. Its totient is φ = 166080.

The previous prime is 423323. The next prime is 423341. The reversal of 423340 is 43324.

It is not an unprimeable number, because it can be changed into a prime (423341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1047 + ... + 1393.

It is an arithmetic number, because the mean of its divisors is an integer number (37758).

2⁴²³³⁴⁰ is an apocalyptic number.

It is an amenable number.

423340 is an abundant number, since it is smaller than the sum of its proper divisors (482852).

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

423340 is a wasteful number, since it uses less digits than its factorization.

423340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 423340 is about 650.6458329998. The cubic root of 423340 is about 75.0867145174.

Subtracting from 423340 its sum of digits (16), we obtain a palindrome (423324).

Multiplying 423340 by its product of nonzero digits (288), we get a triangular number (121921920 = T₁₅₆₁₅).

Adding to 423340 its reverse (43324), we get a palindrome (466664).

The spelling of 423340 in words is "four hundred twenty-three thousand, three hundred forty", and thus it is an iban number.