142166173 has 8 divisors (see below), whose sum is σ = 148404440. Its totient is φ = 136054080.

The previous prime is 142166159. The next prime is 142166179. The reversal of 142166173 is 371661241.

It can be written as a sum of positive squares in 4 ways, for example, as 127449 + 142038724 = 357^2 + 11918^2 .

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 142166173 - 2²¹ = 140069021 is a prime.

It is a super-2 number, since 2×142166173² = 40422441490931858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142166179) 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 7 ways as a sum of consecutive naturals, for example, 29238 + ... + 33751.

It is an arithmetic number, because the mean of its divisors is an integer number (18550555).

Almost surely, 2^142166173 is an apocalyptic number.

It is an amenable number.

142166173 is a deficient number, since it is larger than the sum of its proper divisors (6238267).

142166173 is an equidigital number, since it uses as much as digits as its factorization.

142166173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63087.

The product of its digits is 6048, while the sum is 31.

The square root of 142166173 is about 11923.3457133474. The cubic root of 142166173 is about 521.9137727441.

The spelling of 142166173 in words is "one hundred forty-two million, one hundred sixty-six thousand, one hundred seventy-three".