172742194 has 8 divisors (see below), whose sum is σ = 259730028. Its totient is φ = 86165520.

The previous prime is 172742177. The next prime is 172742263. The reversal of 172742194 is 491247271.

172742194 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 169338169 + 3404025 = 13013^2 + 1845^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101737 + ... + 103420.

Almost surely, 2^172742194 is an apocalyptic number.

172742194 is a deficient number, since it is larger than the sum of its proper divisors (86987834).

172742194 is a wasteful number, since it uses less digits than its factorization.

172742194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205580.

The product of its digits is 28224, while the sum is 37.

The square root of 172742194 is about 13143.1424705053. The cubic root of 172742194 is about 556.9285439204.

The spelling of 172742194 in words is "one hundred seventy-two million, seven hundred forty-two thousand, one hundred ninety-four".