421104432 has 60 divisors (see below), whose sum is σ = 1265468856. Its totient is φ = 120314880.

The previous prime is 421104427. The next prime is 421104449. The reversal of 421104432 is 234401124.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 421104399 and 421104408.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87169 + ... + 91872.

Almost surely, 2^421104432 is an apocalyptic number.

421104432 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

421104432 is an abundant number, since it is smaller than the sum of its proper divisors (844364424).

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

421104432 is a wasteful number, since it uses less digits than its factorization.

421104432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179066 (or 179053 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 421104432 is about 20520.8292230114. The cubic root of 421104432 is about 749.5430888105.

Adding to 421104432 its reverse (234401124), we get a palindrome (655505556).

The spelling of 421104432 in words is "four hundred twenty-one million, one hundred four thousand, four hundred thirty-two".