142003171 has 2 divisors, whose sum is σ = 142003172. Its totient is φ = 142003170.

The previous prime is 142003163. The next prime is 142003223. The reversal of 142003171 is 171300241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142003171 - 2³ = 142003163 is a prime.

It is not a weakly prime, because it can be changed into another prime (142003471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71001585 + 71001586.

It is an arithmetic number, because the mean of its divisors is an integer number (71001586).

Almost surely, 2^142003171 is an apocalyptic number.

142003171 is a deficient number, since it is larger than the sum of its proper divisors (1).

142003171 is an equidigital number, since it uses as much as digits as its factorization.

142003171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 142003171 is about 11916.5083392746. The cubic root of 142003171 is about 521.7142280342.

It can be divided in two parts, 14200 and 3171, that added together give a palindrome (17371).

The spelling of 142003171 in words is "one hundred forty-two million, three thousand, one hundred seventy-one".