142195171 has 8 divisors (see below), whose sum is σ = 147113984. Its totient is φ = 137297160.

The previous prime is 142195159. The next prime is 142195199. The reversal of 142195171 is 171591241.

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 142195171 - 2⁵ = 142195139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142195111) 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, 9400 + ... + 19306.

It is an arithmetic number, because the mean of its divisors is an integer number (18389248).

Almost surely, 2^142195171 is an apocalyptic number.

142195171 is a deficient number, since it is larger than the sum of its proper divisors (4918813).

142195171 is an equidigital number, since it uses as much as digits as its factorization.

142195171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10401.

The product of its digits is 2520, while the sum is 31.

The square root of 142195171 is about 11924.5616690929. The cubic root of 142195171 is about 521.9492556966.

The spelling of 142195171 in words is "one hundred forty-two million, one hundred ninety-five thousand, one hundred seventy-one".