173542 has 4 divisors (see below), whose sum is σ = 260316. Its totient is φ = 86770.

The previous prime is 173539. The next prime is 173543. The reversal of 173542 is 245371.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 245371 = 7 ⋅35053.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43384 + ... + 43387.

It is an arithmetic number, because the mean of its divisors is an integer number (65079).

2¹⁷³⁵⁴² is an apocalyptic number.

173542 is a deficient number, since it is larger than the sum of its proper divisors (86774).

173542 is an equidigital number, since it uses as much as digits as its factorization.

173542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86773.

The product of its digits is 840, while the sum is 22.

The square root of 173542 is about 416.5837250782. The cubic root of 173542 is about 55.7786757502.

The spelling of 173542 in words is "one hundred seventy-three thousand, five hundred forty-two".