170200042 has 4 divisors (see below), whose sum is σ = 255300066. Its totient is φ = 85100020.

The previous prime is 170200021. The next prime is 170200057. The reversal of 170200042 is 240002071.

170200042 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240002071 = 701 ⋅342371.

It can be written as a sum of positive squares in only one way, i.e., 127441521 + 42758521 = 11289^2 + 6539^2 .

It is a junction number, because it is equal to n+sod(n) for n = 170199989 and 170200025.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42550009 + ... + 42550012.

Almost surely, 2^170200042 is an apocalyptic number.

170200042 is a deficient number, since it is larger than the sum of its proper divisors (85100024).

170200042 is an equidigital number, since it uses as much as digits as its factorization.

170200042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85100023.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 170200042 is about 13046.0738155201. The cubic root of 170200042 is about 554.1830276236.

The spelling of 170200042 in words is "one hundred seventy million, two hundred thousand, forty-two".