423129 has 8 divisors (see below), whose sum is σ = 644800. Its totient is φ = 241776.

The previous prime is 423127. The next prime is 423133. The reversal of 423129 is 921324.

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

It is not a de Polignac number, because 423129 - 2¹ = 423127 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 20149 = 423129 / (4 + 2 + 3 + 1 + 2 + 9).

It is a Duffinian number.

It is a Curzon number.

423129 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (423121) 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, 10054 + ... + 10095.

It is an arithmetic number, because the mean of its divisors is an integer number (80600).

2⁴²³¹²⁹ is an apocalyptic number.

It is an amenable number.

423129 is a deficient number, since it is larger than the sum of its proper divisors (221671).

423129 is a wasteful number, since it uses less digits than its factorization.

423129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20159.

The product of its digits is 432, while the sum is 21.

The square root of 423129 is about 650.4836662054. The cubic root of 423129 is about 75.0742376039.

The spelling of 423129 in words is "four hundred twenty-three thousand, one hundred twenty-nine".