142345171 has 4 divisors (see below), whose sum is σ = 143651200. Its totient is φ = 141039144.

The previous prime is 142345163. The next prime is 142345219. The reversal of 142345171 is 171543241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 171543241 = 1277 ⋅134333.

It is a cyclic number.

It is not a de Polignac number, because 142345171 - 2³ = 142345163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142345141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652851 + ... + 653068.

It is an arithmetic number, because the mean of its divisors is an integer number (35912800).

Almost surely, 2^142345171 is an apocalyptic number.

142345171 is a deficient number, since it is larger than the sum of its proper divisors (1306029).

142345171 is a wasteful number, since it uses less digits than its factorization.

142345171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306028.

The product of its digits is 3360, while the sum is 28.

The square root of 142345171 is about 11930.8495506397. The cubic root of 142345171 is about 522.1327238928.

The spelling of 142345171 in words is "one hundred forty-two million, three hundred forty-five thousand, one hundred seventy-one".