42155015100 has 144 divisors (see below), whose sum is σ = 136302276096. Its totient is φ = 9970112000.

The previous prime is 42155015099. The next prime is 42155015137. The reversal of 42155015100 is 151055124.

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, 20484 + ... + 291083.

It is an arithmetic number, because the mean of its divisors is an integer number (946543584).

Almost surely, 2^42155015100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42155015100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68151138048).

42155015100 is an abundant number, since it is smaller than the sum of its proper divisors (94147260996).

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

42155015100 is a wasteful number, since it uses less digits than its factorization.

42155015100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311636 (or 311629 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 24.

The spelling of 42155015100 in words is "forty-two billion, one hundred fifty-five million, fifteen thousand, one hundred".