42121423312 has 40 divisors (see below), whose sum is σ = 85285005696. Its totient is φ = 20133232896.

The previous prime is 42121423283. The next prime is 42121423403. The reversal of 42121423312 is 21332412124.

42121423312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 618973 + ... + 683644.

Almost surely, 2^42121423312 is an apocalyptic number.

It is an amenable number.

42121423312 is an abundant number, since it is smaller than the sum of its proper divisors (43163582384).

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

42121423312 is a wasteful number, since it uses less digits than its factorization.

42121423312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302715 (or 1302709 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

Adding to 42121423312 its reverse (21332412124), we get a palindrome (63453835436).

The spelling of 42121423312 in words is "forty-two billion, one hundred twenty-one million, four hundred twenty-three thousand, three hundred twelve".