42121042110 has 96 divisors (see below), whose sum is σ = 125196477120. Its totient is φ = 9624835584.

The previous prime is 42121042109. The next prime is 42121042127. The reversal of 42121042110 is 1124012124.

42121042110 is a `hidden beast` number, since 4 + 21 + 210 + 421 + 10 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2747346 + ... + 2762634.

It is an arithmetic number, because the mean of its divisors is an integer number (1304129970).

Almost surely, 2^42121042110 is an apocalyptic number.

42121042110 is an abundant number, since it is smaller than the sum of its proper divisors (83075435010).

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

42121042110 is a wasteful number, since it uses less digits than its factorization.

42121042110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19682 (or 19679 counting only the distinct ones).

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

Adding to 42121042110 its reverse (1124012124), we get a palindrome (43245054234).

The spelling of 42121042110 in words is "forty-two billion, one hundred twenty-one million, forty-two thousand, one hundred ten".