421108632 has 320 divisors, whose sum is σ = 1471979520. Its totient is φ = 109734912.

The previous prime is 421108621. The next prime is 421108637. The reversal of 421108632 is 236801124.

421108632 is a `hidden beast` number, since 4 + 21 + 1 + 0 + 8 + 632 = 666.

It is a super-2 number, since 2×421108632² = 354664959889822848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 421108596 and 421108605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421108637) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3315753 + ... + 3315879.

It is an arithmetic number, because the mean of its divisors is an integer number (4599936).

Almost surely, 2^421108632 is an apocalyptic number.

421108632 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421108632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (735989760).

421108632 is an abundant number, since it is smaller than the sum of its proper divisors (1050870888).

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

421108632 is a wasteful number, since it uses less digits than its factorization.

421108632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 421108632 is about 20520.9315578021. The cubic root of 421108632 is about 749.5455807264.

Adding to 421108632 its reverse (236801124), we get a palindrome (657909756).

The spelling of 421108632 in words is "four hundred twenty-one million, one hundred eight thousand, six hundred thirty-two".