142870171 has 2 divisors, whose sum is σ = 142870172. Its totient is φ = 142870170.

The previous prime is 142870129. The next prime is 142870207. The reversal of 142870171 is 171078241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142870171 - 2¹⁷ = 142739099 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142870111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71435085 + 71435086.

It is an arithmetic number, because the mean of its divisors is an integer number (71435086).

Almost surely, 2^142870171 is an apocalyptic number.

142870171 is a deficient number, since it is larger than the sum of its proper divisors (1).

142870171 is an equidigital number, since it uses as much as digits as its factorization.

142870171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 31.

The square root of 142870171 is about 11952.8310872362. The cubic root of 142870171 is about 522.7738494108.

The spelling of 142870171 in words is "one hundred forty-two million, eight hundred seventy thousand, one hundred seventy-one".