843421132 has 12 divisors (see below), whose sum is σ = 1540160496. Its totient is φ = 403375280.

The previous prime is 843421129. The next prime is 843421133. The reversal of 843421132 is 231124348.

It is a super-2 number, since 2×843421132² = 1422718411808322848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 843421132.

It is not an unprimeable number, because it can be changed into a prime (843421133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4583719 + ... + 4583902.

It is an arithmetic number, because the mean of its divisors is an integer number (128346708).

Almost surely, 2^843421132 is an apocalyptic number.

It is an amenable number.

843421132 is a deficient number, since it is larger than the sum of its proper divisors (696739364).

843421132 is a wasteful number, since it uses less digits than its factorization.

843421132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9167648 (or 9167646 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 843421132 is about 29041.7136546727. The cubic root of 843421132 is about 944.8180017735.

The spelling of 843421132 in words is "eight hundred forty-three million, four hundred twenty-one thousand, one hundred thirty-two".