42147609850 has 24 divisors (see below), whose sum is σ = 79275400380. Its totient is φ = 16669614720.

The previous prime is 42147609841. The next prime is 42147609851. The reversal of 42147609850 is 5890674124.

It can be written as a sum of positive squares in 6 ways, for example, as 17815041729 + 24332568121 = 133473^2 + 155989^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42147609850.

It is not an unprimeable number, because it can be changed into a prime (42147609851) 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 11 ways as a sum of consecutive naturals, for example, 4731237 + ... + 4740136.

Almost surely, 2^42147609850 is an apocalyptic number.

42147609850 is a deficient number, since it is larger than the sum of its proper divisors (37127790530).

42147609850 is a wasteful number, since it uses less digits than its factorization.

42147609850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9471474 (or 9471469 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 42147609850 in words is "forty-two billion, one hundred forty-seven million, six hundred nine thousand, eight hundred fifty".