171034642 has 4 divisors (see below), whose sum is σ = 256551966. Its totient is φ = 85517320.

The previous prime is 171034627. The next prime is 171034649. The reversal of 171034642 is 246430171.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 131079601 + 39955041 = 11449^2 + 6321^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 171034642.

It is not an unprimeable number, because it can be changed into a prime (171034649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42758659 + ... + 42758662.

Almost surely, 2^171034642 is an apocalyptic number.

171034642 is a deficient number, since it is larger than the sum of its proper divisors (85517324).

171034642 is an equidigital number, since it uses as much as digits as its factorization.

171034642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85517323.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 171034642 is about 13078.0213335198. The cubic root of 171034642 is about 555.0873893179.

The spelling of 171034642 in words is "one hundred seventy-one million, thirty-four thousand, six hundred forty-two".