171340142 has 4 divisors (see below), whose sum is σ = 257010216. Its totient is φ = 85670070.

The previous prime is 171340129. The next prime is 171340187. The reversal of 171340142 is 241043171.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241043171 = 2029 ⋅118799.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42835034 + ... + 42835037.

It is an arithmetic number, because the mean of its divisors is an integer number (64252554).

Almost surely, 2^171340142 is an apocalyptic number.

171340142 is a deficient number, since it is larger than the sum of its proper divisors (85670074).

171340142 is an equidigital number, since it uses as much as digits as its factorization.

171340142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85670073.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 171340142 is about 13089.6960239724. The cubic root of 171340142 is about 555.4176895205.

The spelling of 171340142 in words is "one hundred seventy-one million, three hundred forty thousand, one hundred forty-two".