421538112 has 168 divisors, whose sum is σ = 1289523456. Its totient is φ = 131349504.

The previous prime is 421538111. The next prime is 421538141. The reversal of 421538112 is 211835124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421538111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 622318 + ... + 622994.

Almost surely, 2^421538112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421538112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (644761728).

421538112 is an abundant number, since it is smaller than the sum of its proper divisors (867985344).

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

421538112 is a wasteful number, since it uses less digits than its factorization.

421538112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765 (or 752 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 421538112 is about 20531.3933282668. The cubic root of 421538112 is about 749.8003095030.

The spelling of 421538112 in words is "four hundred twenty-one million, five hundred thirty-eight thousand, one hundred twelve".