142717161 has 4 divisors (see below), whose sum is σ = 190289552. Its totient is φ = 95144772.

The previous prime is 142717153. The next prime is 142717163. The reversal of 142717161 is 161717241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 142717161 - 2³ = 142717153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142717163) 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 in 3 ways as a sum of consecutive naturals, for example, 23786191 + ... + 23786196.

It is an arithmetic number, because the mean of its divisors is an integer number (47572388).

Almost surely, 2^142717161 is an apocalyptic number.

It is an amenable number.

142717161 is a deficient number, since it is larger than the sum of its proper divisors (47572391).

142717161 is an equidigital number, since it uses as much as digits as its factorization.

142717161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47572390.

The product of its digits is 2352, while the sum is 30.

The square root of 142717161 is about 11946.4287969250. The cubic root of 142717161 is about 522.5871573050.

The spelling of 142717161 in words is "one hundred forty-two million, seven hundred seventeen thousand, one hundred sixty-one".