423429 has 16 divisors (see below), whose sum is σ = 606720. Its totient is φ = 262080.

The previous prime is 423427. The next prime is 423431. The reversal of 423429 is 924324.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (423427) and next prime (423431).

It is not a de Polignac number, because 423429 - 2¹ = 423427 is a prime.

423429 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 423399 and 423408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2619 + ... + 2775.

It is an arithmetic number, because the mean of its divisors is an integer number (37920).

2⁴²³⁴²⁹ is an apocalyptic number.

It is an amenable number.

423429 is a deficient number, since it is larger than the sum of its proper divisors (183291).

423429 is a wasteful number, since it uses less digits than its factorization.

423429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220.

The product of its digits is 1728, while the sum is 24.

The square root of 423429 is about 650.7142229889. The cubic root of 423429 is about 75.0919760482.

The spelling of 423429 in words is "four hundred twenty-three thousand, four hundred twenty-nine".