142711171 has 4 divisors (see below), whose sum is σ = 143041192. Its totient is φ = 142381152.

The previous prime is 142711169. The next prime is 142711187. The reversal of 142711171 is 171117241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 142711171 - 2¹ = 142711169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142711111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164361 + ... + 165226.

It is an arithmetic number, because the mean of its divisors is an integer number (35760298).

Almost surely, 2^142711171 is an apocalyptic number.

142711171 is a deficient number, since it is larger than the sum of its proper divisors (330021).

142711171 is an equidigital number, since it uses as much as digits as its factorization.

142711171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330020.

The product of its digits is 392, while the sum is 25.

The square root of 142711171 is about 11946.1780917580. The cubic root of 142711171 is about 522.5798460122.

The spelling of 142711171 in words is "one hundred forty-two million, seven hundred eleven thousand, one hundred seventy-one".