423128 has 16 divisors (see below), whose sum is σ = 800280. Its totient is φ = 209728.

The previous prime is 423127. The next prime is 423133. The reversal of 423128 is 821324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423121) 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, 1700 + ... + 1932.

2⁴²³¹²⁸ is an apocalyptic number.

It is an amenable number.

423128 is a deficient number, since it is larger than the sum of its proper divisors (377152).

423128 is a wasteful number, since it uses less digits than its factorization.

423128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466 (or 462 counting only the distinct ones).

The product of its digits is 384, while the sum is 20.

The square root of 423128 is about 650.4828975461. The cubic root of 423128 is about 75.0741784617.

It can be divided in two parts, 4 and 23128, that added together give a palindrome (23132).

The spelling of 423128 in words is "four hundred twenty-three thousand, one hundred twenty-eight".