172442 has 8 divisors (see below), whose sum is σ = 260832. Its totient is φ = 85500.

The previous prime is 172441. The next prime is 172489. The reversal of 172442 is 244271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×172442³ = 15383331834524664, which contains 333 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (172441) 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, 17 + ... + 587.

It is an arithmetic number, because the mean of its divisors is an integer number (32604).

2¹⁷²⁴⁴² is an apocalyptic number.

172442 is a deficient number, since it is larger than the sum of its proper divisors (88390).

172442 is a wasteful number, since it uses less digits than its factorization.

172442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724.

The product of its digits is 448, while the sum is 20.

The square root of 172442 is about 415.2613634809. The cubic root of 172442 is about 55.6605743907.

It can be divided in two parts, 17 and 2442, that multiplied together give a palindrome (41514).

The spelling of 172442 in words is "one hundred seventy-two thousand, four hundred forty-two", and thus it is an iban number.