84135171 has 16 divisors (see below), whose sum is σ = 114307200. Its totient is φ = 55036608.

The previous prime is 84135169. The next prime is 84135197. The reversal of 84135171 is 17153148.

It is not a de Polignac number, because 84135171 - 2¹ = 84135169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84135131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35980 + ... + 38246.

It is an arithmetic number, because the mean of its divisors is an integer number (7144200).

Almost surely, 2^84135171 is an apocalyptic number.

84135171 is a deficient number, since it is larger than the sum of its proper divisors (30172029).

84135171 is a wasteful number, since it uses less digits than its factorization.

84135171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2498.

The product of its digits is 3360, while the sum is 30.

The square root of 84135171 is about 9172.5226083123. The cubic root of 84135171 is about 438.1867023734.

The spelling of 84135171 in words is "eighty-four million, one hundred thirty-five thousand, one hundred seventy-one".