42187078860 has 144 divisors (see below), whose sum is σ = 125640716544. Its totient is φ = 10556758784.

The previous prime is 42187078859. The next prime is 42187078867. The reversal of 42187078860 is 6887078124.

It is not an unprimeable number, because it can be changed into a prime (42187078867) by changing a digit.

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, 3870979 + ... + 3881861.

It is an arithmetic number, because the mean of its divisors is an integer number (872504976).

Almost surely, 2^42187078860 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 42187078860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62820358272).

42187078860 is an abundant number, since it is smaller than the sum of its proper divisors (83453637684).

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

42187078860 is a wasteful number, since it uses less digits than its factorization.

42187078860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11024 (or 10969 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 51.

The spelling of 42187078860 in words is "forty-two billion, one hundred eighty-seven million, seventy-eight thousand, eight hundred sixty".