421604233612 has 48 divisors (see below), whose sum is σ = 794672363520. Its totient is φ = 194984329472.

The previous prime is 421604233597. The next prime is 421604233613. The reversal of 421604233612 is 216332406124.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (421604233613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16544793 + ... + 16570255.

It is an arithmetic number, because the mean of its divisors is an integer number (16555674240).

Almost surely, 2^421604233612 is an apocalyptic number.

It is an amenable number.

421604233612 is a deficient number, since it is larger than the sum of its proper divisors (373068129908).

421604233612 is a wasteful number, since it uses less digits than its factorization.

421604233612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29670 (or 29668 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

Adding to 421604233612 its reverse (216332406124), we get a palindrome (637936639736).

The spelling of 421604233612 in words is "four hundred twenty-one billion, six hundred four million, two hundred thirty-three thousand, six hundred twelve".