172726242 has 32 divisors (see below), whose sum is σ = 372556800. Its totient is φ = 53070720.

The previous prime is 172726241. The next prime is 172726247. The reversal of 172726242 is 242627271.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (172726241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80767 + ... + 82877.

It is an arithmetic number, because the mean of its divisors is an integer number (11642400).

Almost surely, 2^172726242 is an apocalyptic number.

172726242 is an abundant number, since it is smaller than the sum of its proper divisors (199830558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172726242 is a wasteful number, since it uses less digits than its factorization.

172726242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3178.

The product of its digits is 18816, while the sum is 33.

The square root of 172726242 is about 13142.5356001040. The cubic root of 172726242 is about 556.9114000727.

The spelling of 172726242 in words is "one hundred seventy-two million, seven hundred twenty-six thousand, two hundred forty-two".