432421 has 8 divisors (see below), whose sum is σ = 496800. Its totient is φ = 372240.

The previous prime is 432413. The next prime is 432433. The reversal of 432421 is 124234.

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

It is not a de Polignac number, because 432421 - 2³ = 432413 is a prime.

It is a Duffinian number.

432421 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 432395 and 432404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (432401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 826 + ... + 1243.

It is an arithmetic number, because the mean of its divisors is an integer number (62100).

2⁴³²⁴²¹ is an apocalyptic number.

It is an amenable number.

432421 is a deficient number, since it is larger than the sum of its proper divisors (64379).

432421 is a wasteful number, since it uses less digits than its factorization.

432421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2099.

The product of its digits is 192, while the sum is 16.

The square root of 432421 is about 657.5872565675. The cubic root of 432421 is about 75.6198118154.

Adding to 432421 its reverse (124234), we get a palindrome (556655).

The spelling of 432421 in words is "four hundred thirty-two thousand, four hundred twenty-one".