423121132 has 24 divisors (see below), whose sum is σ = 860118560. Its totient is φ = 178364160.

The previous prime is 423121117. The next prime is 423121141. The reversal of 423121132 is 231121324.

It is a happy number.

It is a super-2 number, since 2×423121132² = 358062984689922848, which contains 22 as substring.

It is an unprimeable number.

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, 122157 + ... + 125572.

Almost surely, 2^423121132 is an apocalyptic number.

It is an amenable number.

423121132 is an abundant number, since it is smaller than the sum of its proper divisors (436997428).

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

423121132 is a wasteful number, since it uses less digits than its factorization.

423121132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247801 (or 247799 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 423121132 is about 20569.9084101024. The cubic root of 423121132 is about 750.7377227083.

Adding to 423121132 its reverse (231121324), we get a palindrome (654242456).

The spelling of 423121132 in words is "four hundred twenty-three million, one hundred twenty-one thousand, one hundred thirty-two".