423454 has 4 divisors (see below), whose sum is σ = 635184. Its totient is φ = 211726.

The previous prime is 423439. The next prime is 423457. The reversal of 423454 is 454324.

It is a happy number.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423457) 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 as a sum of consecutive naturals, namely, 105862 + ... + 105865.

It is an arithmetic number, because the mean of its divisors is an integer number (158796).

2⁴²³⁴⁵⁴ is an apocalyptic number.

423454 is a deficient number, since it is larger than the sum of its proper divisors (211730).

423454 is a wasteful number, since it uses less digits than its factorization.

423454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211729.

The product of its digits is 1920, while the sum is 22.

The square root of 423454 is about 650.7334323669. The cubic root of 423454 is about 75.0934538737.

Adding to 423454 its reverse (454324), we get a palindrome (877778).

The spelling of 423454 in words is "four hundred twenty-three thousand, four hundred fifty-four".