421832 has 16 divisors (see below), whose sum is σ = 803760. Its totient is φ = 207504.

The previous prime is 421831. The next prime is 421847. The reversal of 421832 is 238124.

It is not an unprimeable number, because it can be changed into a prime (421831) 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 3 ways as a sum of consecutive naturals, for example, 143 + ... + 929.

It is an arithmetic number, because the mean of its divisors is an integer number (50235).

2⁴²¹⁸³² is an apocalyptic number.

It is an amenable number.

421832 is a deficient number, since it is larger than the sum of its proper divisors (381928).

421832 is a wasteful number, since it uses less digits than its factorization.

421832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860 (or 856 counting only the distinct ones).

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

The square root of 421832 is about 649.4859505794. The cubic root of 421832 is about 74.9974517653.

Adding to 421832 its reverse (238124), we get a palindrome (659956).

The spelling of 421832 in words is "four hundred twenty-one thousand, eight hundred thirty-two".