172201642 has 8 divisors (see below), whose sum is σ = 258372576. Its totient is φ = 86077452.

The previous prime is 172201639. The next prime is 172201643. The reversal of 172201642 is 246102271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (172201643) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 228 + ... + 18559.

It is an arithmetic number, because the mean of its divisors is an integer number (32296572).

Almost surely, 2^172201642 is an apocalyptic number.

172201642 is a deficient number, since it is larger than the sum of its proper divisors (86170934).

172201642 is a wasteful number, since it uses less digits than its factorization.

172201642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23372.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 172201642 is about 13122.5623260094. The cubic root of 172201642 is about 556.3470156586.

The spelling of 172201642 in words is "one hundred seventy-two million, two hundred one thousand, six hundred forty-two".