171240 has 32 divisors (see below), whose sum is σ = 514080. Its totient is φ = 45632.

The previous prime is 171233. The next prime is 171251. The reversal of 171240 is 42171.

171240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

171240 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 594 + ... + 833.

It is an arithmetic number, because the mean of its divisors is an integer number (16065).

2¹⁷¹²⁴⁰ is an apocalyptic number.

171240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

171240 is an abundant number, since it is smaller than the sum of its proper divisors (342840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171240 is a wasteful number, since it uses less digits than its factorization.

171240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441 (or 1437 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 171240 is about 413.8115513129. The cubic root of 171240 is about 55.5309461374.

The spelling of 171240 in words is "one hundred seventy-one thousand, two hundred forty", and thus it is an iban number.