142149171 has 8 divisors (see below), whose sum is σ = 192201984. Its totient is φ = 93431240.

The previous prime is 142149169. The next prime is 142149191. The reversal of 142149171 is 171941241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142149171 - 2¹ = 142149169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142149101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333471 + ... + 333896.

It is an arithmetic number, because the mean of its divisors is an integer number (24025248).

Almost surely, 2^142149171 is an apocalyptic number.

142149171 is a deficient number, since it is larger than the sum of its proper divisors (50052813).

142149171 is an equidigital number, since it uses as much as digits as its factorization.

142149171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667441.

The product of its digits is 2016, while the sum is 30.

The square root of 142149171 is about 11922.6327210059. The cubic root of 142149171 is about 521.8929662669.

The spelling of 142149171 in words is "one hundred forty-two million, one hundred forty-nine thousand, one hundred seventy-one".