420421132 has 24 divisors (see below), whose sum is σ = 799447040. Its totient is φ = 192721680.

The previous prime is 420421109. The next prime is 420421139. The reversal of 420421132 is 231124024.

It is a super-2 number, since 2×420421132² = 353507856464322848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (420421139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86868 + ... + 91579.

Almost surely, 2^420421132 is an apocalyptic number.

It is an amenable number.

420421132 is a deficient number, since it is larger than the sum of its proper divisors (379025908).

420421132 is a wasteful number, since it uses less digits than its factorization.

420421132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178501 (or 178499 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 420421132 is about 20504.1735263824. The cubic root of 420421132 is about 749.1374569990.

Adding to 420421132 its reverse (231124024), we get a palindrome (651545156).

The spelling of 420421132 in words is "four hundred twenty million, four hundred twenty-one thousand, one hundred thirty-two".