42185787084 has 72 divisors (see below), whose sum is σ = 121994745600. Its totient is φ = 12040749792.

The previous prime is 42185787067. The next prime is 42185787089. The reversal of 42185787084 is 48078758124.

42185787084 is a `hidden beast` number, since 421 + 8 + 5 + 78 + 70 + 84 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 42185787084.

It is not an unprimeable number, because it can be changed into a prime (42185787089) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162567 + ... + 332865.

Almost surely, 2^42185787084 is an apocalyptic number.

It is an amenable number.

42185787084 is an abundant number, since it is smaller than the sum of its proper divisors (79808958516).

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

42185787084 is a wasteful number, since it uses less digits than its factorization.

42185787084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171299 (or 171294 counting only the distinct ones).

The product of its (nonzero) digits is 4014080, while the sum is 54.

The spelling of 42185787084 in words is "forty-two billion, one hundred eighty-five million, seven hundred eighty-seven thousand, eighty-four".