172271242 has 32 divisors (see below), whose sum is σ = 316794240. Its totient is φ = 69136320.

The previous prime is 172271213. The next prime is 172271243. The reversal of 172271242 is 242172271.

It is a self number, because there is not a number n which added to its sum of digits gives 172271242.

It is not an unprimeable number, because it can be changed into a prime (172271243) 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, 6517 + ... + 19672.

It is an arithmetic number, because the mean of its divisors is an integer number (9899820).

Almost surely, 2^172271242 is an apocalyptic number.

172271242 is a deficient number, since it is larger than the sum of its proper divisors (144522998).

172271242 is a wasteful number, since it uses less digits than its factorization.

172271242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26238.

The product of its digits is 3136, while the sum is 28.

The square root of 172271242 is about 13125.2139792081. The cubic root of 172271242 is about 556.4219598465.

The spelling of 172271242 in words is "one hundred seventy-two million, two hundred seventy-one thousand, two hundred forty-two".