423521230132 has 96 divisors (see below), whose sum is σ = 995799619584. Its totient is φ = 152212348800.

The previous prime is 423521230019. The next prime is 423521230133. The reversal of 423521230132 is 231032125324.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 423521230132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423521230133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6015043 + ... + 6085045.

It is an arithmetic number, because the mean of its divisors is an integer number (10372912704).

Almost surely, 2^423521230132 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 423521230132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (497899809792).

423521230132 is an abundant number, since it is smaller than the sum of its proper divisors (572278389452).

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

423521230132 is a wasteful number, since it uses less digits than its factorization.

423521230132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71549 (or 71547 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 423521230132 its reverse (231032125324), we get a palindrome (654553355456).

The spelling of 423521230132 in words is "four hundred twenty-three billion, five hundred twenty-one million, two hundred thirty thousand, one hundred thirty-two".