84742147071 has 12 divisors (see below), whose sum is σ = 127727294448. Its totient is φ = 54038470464.

The previous prime is 84742147033. The next prime is 84742147079. The reversal of 84742147071 is 17074124748.

It is not a de Polignac number, because 84742147071 - 2¹¹ = 84742145023 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84742147079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204690970 + ... + 204691383.

It is an arithmetic number, because the mean of its divisors is an integer number (10643941204).

Almost surely, 2^84742147071 is an apocalyptic number.

84742147071 is a deficient number, since it is larger than the sum of its proper divisors (42985147377).

84742147071 is a wasteful number, since it uses less digits than its factorization.

84742147071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409382382 (or 409382379 counting only the distinct ones).

The product of its (nonzero) digits is 351232, while the sum is 45.

The spelling of 84742147071 in words is "eighty-four billion, seven hundred forty-two million, one hundred forty-seven thousand, seventy-one".