421132200444 has 72 divisors (see below), whose sum is σ = 1092587801760. Its totient is φ = 136690444800.

The previous prime is 421132200397. The next prime is 421132200449. The reversal of 421132200444 is 444002231124.

421132200444 is a `hidden beast` number, since 4 + 2 + 1 + 13 + 2 + 200 + 444 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421132200449) 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, 495177 + ... + 1042815.

It is an arithmetic number, because the mean of its divisors is an integer number (15174830580).

Almost surely, 2^421132200444 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 421132200444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (546293900880).

421132200444 is an abundant number, since it is smaller than the sum of its proper divisors (671455601316).

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

421132200444 is a wasteful number, since it uses less digits than its factorization.

421132200444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548211 (or 548206 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 421132200444 its reverse (444002231124), we get a palindrome (865134431568).

The spelling of 421132200444 in words is "four hundred twenty-one billion, one hundred thirty-two million, two hundred thousand, four hundred forty-four".