172942 has 16 divisors (see below), whose sum is σ = 323712. Its totient is φ = 67320.

The previous prime is 172933. The next prime is 172969. The reversal of 172942 is 249271.

172942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

172942 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408 + ... + 715.

It is an arithmetic number, because the mean of its divisors is an integer number (20232).

2¹⁷²⁹⁴² is an apocalyptic number.

172942 is a deficient number, since it is larger than the sum of its proper divisors (150770).

172942 is a wasteful number, since it uses less digits than its factorization.

172942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143.

The product of its digits is 1008, while the sum is 25.

The square root of 172942 is about 415.8629581966. The cubic root of 172942 is about 55.7143189005.

It can be divided in two parts, 1729 and 42, that added together give a palindrome (1771).

The spelling of 172942 in words is "one hundred seventy-two thousand, nine hundred forty-two".