172142 has 16 divisors (see below), whose sum is σ = 281232. Its totient is φ = 78720.

The previous prime is 172127. The next prime is 172147. The reversal of 172142 is 241271.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 172142.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 172142.

It is not an unprimeable number, because it can be changed into a prime (172147) 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, 2033 + ... + 2115.

It is an arithmetic number, because the mean of its divisors is an integer number (17577).

2¹⁷²¹⁴² is an apocalyptic number.

172142 is a deficient number, since it is larger than the sum of its proper divisors (109090).

172142 is a wasteful number, since it uses less digits than its factorization.

172142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163.

The product of its digits is 112, while the sum is 17.

The square root of 172142 is about 414.8999879489. The cubic root of 172142 is about 55.6282778020.

The spelling of 172142 in words is "one hundred seventy-two thousand, one hundred forty-two", and thus it is an iban number.