87042171 has 8 divisors (see below), whose sum is σ = 116333584. Its totient is φ = 57889440.

The previous prime is 87042157. The next prime is 87042187. The reversal of 87042171 is 17124078.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87042171 - 2⁹ = 87041659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87042101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33196 + ... + 35721.

It is an arithmetic number, because the mean of its divisors is an integer number (14541698).

Almost surely, 2^87042171 is an apocalyptic number.

87042171 is a deficient number, since it is larger than the sum of its proper divisors (29291413).

87042171 is a wasteful number, since it uses less digits than its factorization.

87042171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69341.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 87042171 is about 9329.6393820983. The cubic root of 87042171 is about 443.1763451292.

The spelling of 87042171 in words is "eighty-seven million, forty-two thousand, one hundred seventy-one".