421102342243020 has 48 divisors (see below), whose sum is σ = 1179089951826528. Its totient is φ = 112293634736640.

The previous prime is 421102342242737. The next prime is 421102342243031. The reversal of 421102342243020 is 20342243201124.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11295442 + ... + 31141478.

It is an arithmetic number, because the mean of its divisors is an integer number (24564373996386).

Almost surely, 2^{421102342243020} is an apocalyptic number.

It is an amenable number.

421102342243020 is an abundant number, since it is smaller than the sum of its proper divisors (757987609583508).

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

421102342243020 is a wasteful number, since it uses less digits than its factorization.

421102342243020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20199690 (or 20199688 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 421102342243020 its reverse (20342243201124), we get a palindrome (441444585444144).

The spelling of 421102342243020 in words is "four hundred twenty-one trillion, one hundred two billion, three hundred forty-two million, two hundred forty-three thousand, twenty".