170742 has 32 divisors (see below), whose sum is σ = 403200. Its totient is φ = 47520.

The previous prime is 170741. The next prime is 170749. The reversal of 170742 is 247071.

It is a plaindrome in base 15.

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 170742.

It is not an unprimeable number, because it can be changed into a prime (170741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 759 + ... + 957.

It is an arithmetic number, because the mean of its divisors is an integer number (12600).

2¹⁷⁰⁷⁴² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 170742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201600).

170742 is an abundant number, since it is smaller than the sum of its proper divisors (232458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

170742 is a wasteful number, since it uses less digits than its factorization.

170742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 170742 is about 413.2093900192. The cubic root of 170742 is about 55.4770621875.

The spelling of 170742 in words is "one hundred seventy thousand, seven hundred forty-two", and thus it is an iban number.