421302132 has 72 divisors (see below), whose sum is σ = 1137200064. Its totient is φ = 131193216.

The previous prime is 421302103. The next prime is 421302139. The reversal of 421302132 is 231203124.

421302132 is a `hidden beast` number, since 421 + 30 + 213 + 2 = 666.

It is a super-3 number, since 3×421302132³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421302139) 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, 29688 + ... + 41520.

Almost surely, 2^421302132 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 421302132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (568600032).

421302132 is an abundant number, since it is smaller than the sum of its proper divisors (715897932).

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

421302132 is a wasteful number, since it uses less digits than its factorization.

421302132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11909 (or 11904 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 421302132 is about 20525.6457145689. The cubic root of 421302132 is about 749.6603688908.

Adding to 421302132 its reverse (231203124), we get a palindrome (652505256).

The spelling of 421302132 in words is "four hundred twenty-one million, three hundred two thousand, one hundred thirty-two".