42121120104 has 144 divisors (see below), whose sum is σ = 138472981920. Its totient is φ = 11511339840.

The previous prime is 42121120043. The next prime is 42121120117. The reversal of 42121120104 is 40102112124.

42121120104 is a `hidden beast` number, since 421 + 21 + 120 + 104 = 666.

42121120104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 178402 + ... + 340689.

It is an arithmetic number, because the mean of its divisors is an integer number (961617930).

Almost surely, 2^42121120104 is an apocalyptic number.

It is an amenable number.

42121120104 is an abundant number, since it is smaller than the sum of its proper divisors (96351861816).

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

42121120104 is a wasteful number, since it uses less digits than its factorization.

42121120104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519140 (or 519126 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 42121120104 its reverse (40102112124), we get a palindrome (82223232228).

The spelling of 42121120104 in words is "forty-two billion, one hundred twenty-one million, one hundred twenty thousand, one hundred four".