171942120 has 288 divisors, whose sum is σ = 669202560. Its totient is φ = 37497600.

The previous prime is 171942109. The next prime is 171942149. The reversal of 171942120 is 21249171.

171942120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2421685 + ... + 2421755.

It is an arithmetic number, because the mean of its divisors is an integer number (2323620).

Almost surely, 2^171942120 is an apocalyptic number.

171942120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 171942120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (334601280).

171942120 is an abundant number, since it is smaller than the sum of its proper divisors (497260440).

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

171942120 is a wasteful number, since it uses less digits than its factorization.

171942120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 171942120 is about 13112.6702086188. The cubic root of 171942120 is about 556.0673882746.

The spelling of 171942120 in words is "one hundred seventy-one million, nine hundred forty-two thousand, one hundred twenty".