172206134 has 4 divisors (see below), whose sum is σ = 258309204. Its totient is φ = 86103066.

The previous prime is 172206113. The next prime is 172206149. The reversal of 172206134 is 431602271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 431602271 = 19 ⋅22715909.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43051532 + ... + 43051535.

It is an arithmetic number, because the mean of its divisors is an integer number (64577301).

Almost surely, 2^172206134 is an apocalyptic number.

172206134 is a deficient number, since it is larger than the sum of its proper divisors (86103070).

172206134 is an equidigital number, since it uses as much as digits as its factorization.

172206134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86103069.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 172206134 is about 13122.7334804910. The cubic root of 172206134 is about 556.3518531832.

The spelling of 172206134 in words is "one hundred seventy-two million, two hundred six thousand, one hundred thirty-four".