421533432 has 24 divisors (see below), whose sum is σ = 1141653240. Its totient is φ = 140511120.

The previous prime is 421533403. The next prime is 421533467. The reversal of 421533432 is 234335124.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 421533396 and 421533405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2927244 + ... + 2927387.

It is an arithmetic number, because the mean of its divisors is an integer number (47568885).

Almost surely, 2^421533432 is an apocalyptic number.

It is an amenable number.

421533432 is an abundant number, since it is smaller than the sum of its proper divisors (720119808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421533432 is a wasteful number, since it uses less digits than its factorization.

421533432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5854643 (or 5854636 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 421533432 is about 20531.2793561434. The cubic root of 421533432 is about 749.7975346820.

Adding to 421533432 its reverse (234335124), we get a palindrome (655868556).

The spelling of 421533432 in words is "four hundred twenty-one million, five hundred thirty-three thousand, four hundred thirty-two".