171242572 has 6 divisors (see below), whose sum is σ = 299674508. Its totient is φ = 85621284.

The previous prime is 171242563. The next prime is 171242587. The reversal of 171242572 is 275242171.

171242572 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 21405318 + ... + 21405325.

Almost surely, 2^171242572 is an apocalyptic number.

It is an amenable number.

171242572 is a deficient number, since it is larger than the sum of its proper divisors (128431936).

171242572 is a wasteful number, since it uses less digits than its factorization.

171242572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42810647 (or 42810645 counting only the distinct ones).

The product of its digits is 7840, while the sum is 31.

The square root of 171242572 is about 13085.9685159334. The cubic root of 171242572 is about 555.3122415829.

The spelling of 171242572 in words is "one hundred seventy-one million, two hundred forty-two thousand, five hundred seventy-two".