102171 has 4 divisors (see below), whose sum is σ = 136232. Its totient is φ = 68112.
The previous prime is 102161. The next prime is 102181. The reversal of 102171 is 171201.
It is a semiprime because it is the product of two primes.
It is an interprime number because it is at equal distance from previous prime (102161) and next prime (102181).
It is not a de Polignac number, because 102171 - 25 = 102139 is a prime.
It is an Ulam number.
It is a D-number.
It is a Duffinian number.
102171 is a lucky number.
It is not an unprimeable number, because it can be changed into a prime (102101) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17026 + ... + 17031.
It is an arithmetic number, because the mean of its divisors is an integer number (34058).
2102171 is an apocalyptic number.
102171 is a deficient number, since it is larger than the sum of its proper divisors (34061).
102171 is an equidigital number, since it uses as much as digits as its factorization.
102171 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 34060.
The product of its (nonzero) digits is 14, while the sum is 12.
The square root of 102171 is about 319.6419872295. The cubic root of 102171 is about 46.7493827785.
Adding to 102171 its reverse (171201), we get a palindrome (273372).
The spelling of 102171 in words is "one hundred two thousand, one hundred seventy-one", and thus it is an iban number.
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