171240149 has 8 divisors (see below), whose sum is σ = 175721280. Its totient is φ = 166773600.

The previous prime is 171240131. The next prime is 171240161. The reversal of 171240149 is 941042171.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171240149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171240169) 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, 22562 + ... + 29180.

It is an arithmetic number, because the mean of its divisors is an integer number (21965160).

Almost surely, 2^171240149 is an apocalyptic number.

It is an amenable number.

171240149 is a deficient number, since it is larger than the sum of its proper divisors (4481131).

171240149 is an equidigital number, since it uses as much as digits as its factorization.

171240149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7291.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 171240149 is about 13085.8759355268. The cubic root of 171240149 is about 555.3096224369.

The spelling of 171240149 in words is "one hundred seventy-one million, two hundred forty thousand, one hundred forty-nine".