432021 has 16 divisors (see below), whose sum is σ = 627264. Its totient is φ = 263424.

The previous prime is 432007. The next prime is 432023. The reversal of 432021 is 120234.

It is not a de Polignac number, because 432021 - 2¹¹ = 429973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 431988 and 432006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (432023) 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 15 ways as a sum of consecutive naturals, for example, 2095 + ... + 2291.

It is an arithmetic number, because the mean of its divisors is an integer number (39204).

2⁴³²⁰²¹ is an apocalyptic number.

It is an amenable number.

432021 is a deficient number, since it is larger than the sum of its proper divisors (195243).

432021 is a wasteful number, since it uses less digits than its factorization.

432021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 432021 is about 657.2830440533. The cubic root of 432021 is about 75.5964878971.

Adding to 432021 its reverse (120234), we get a palindrome (552255).

The spelling of 432021 in words is "four hundred thirty-two thousand, twenty-one".