42121423112 has 32 divisors (see below), whose sum is σ = 79252320000. Its totient is φ = 20987593344.

The previous prime is 42121423087. The next prime is 42121423139. The reversal of 42121423112 is 21132412124.

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, 3001889 + ... + 3015887.

It is an arithmetic number, because the mean of its divisors is an integer number (2476635000).

Almost surely, 2^42121423112 is an apocalyptic number.

It is an amenable number.

42121423112 is a deficient number, since it is larger than the sum of its proper divisors (37130896888).

42121423112 is a wasteful number, since it uses less digits than its factorization.

42121423112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15285 (or 15281 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

Adding to 42121423112 its reverse (21132412124), we get a palindrome (63253835236).

The spelling of 42121423112 in words is "forty-two billion, one hundred twenty-one million, four hundred twenty-three thousand, one hundred twelve".