142724171 has 2 divisors, whose sum is σ = 142724172. Its totient is φ = 142724170.

The previous prime is 142724159. The next prime is 142724173. The reversal of 142724171 is 171427241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142724171 - 2¹⁸ = 142462027 is a prime.

Together with 142724173, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142724173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71362085 + 71362086.

It is an arithmetic number, because the mean of its divisors is an integer number (71362086).

Almost surely, 2^142724171 is an apocalyptic number.

142724171 is a deficient number, since it is larger than the sum of its proper divisors (1).

142724171 is an equidigital number, since it uses as much as digits as its factorization.

142724171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3136, while the sum is 29.

The square root of 142724171 is about 11946.7221864409. The cubic root of 142724171 is about 522.5957133328.

The spelling of 142724171 in words is "one hundred forty-two million, seven hundred twenty-four thousand, one hundred seventy-one".