142171153 has 4 divisors (see below), whose sum is σ = 150534180. Its totient is φ = 133808128.

The previous prime is 142171151. The next prime is 142171171. The reversal of 142171153 is 351171241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55457809 + 86713344 = 7447^2 + 9312^2 .

It is a cyclic number.

It is not a de Polignac number, because 142171153 - 2¹ = 142171151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142171151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4181488 + ... + 4181521.

It is an arithmetic number, because the mean of its divisors is an integer number (37633545).

Almost surely, 2^142171153 is an apocalyptic number.

It is an amenable number.

142171153 is a deficient number, since it is larger than the sum of its proper divisors (8363027).

142171153 is an equidigital number, since it uses as much as digits as its factorization.

142171153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8363026.

The product of its digits is 840, while the sum is 25.

The square root of 142171153 is about 11923.5545455204. The cubic root of 142171153 is about 521.9198667869.

The spelling of 142171153 in words is "one hundred forty-two million, one hundred seventy-one thousand, one hundred fifty-three".