171109142 has 16 divisors (see below), whose sum is σ = 258616800. Its totient is φ = 84906432.

The previous prime is 171109109. The next prime is 171109151. The reversal of 171109142 is 241901171.

171109142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278828 + ... + 279440.

It is an arithmetic number, because the mean of its divisors is an integer number (16163550).

Almost surely, 2^171109142 is an apocalyptic number.

171109142 is a deficient number, since it is larger than the sum of its proper divisors (87507658).

171109142 is a wasteful number, since it uses less digits than its factorization.

171109142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 171109142 is about 13080.8693136198. The cubic root of 171109142 is about 555.1679733974.

The spelling of 171109142 in words is "one hundred seventy-one million, one hundred nine thousand, one hundred forty-two".