172106419 has 4 divisors (see below), whose sum is σ = 182230344. Its totient is φ = 161982496.

The previous prime is 172106381. The next prime is 172106461. The reversal of 172106419 is 914601271.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 172106419 - 2¹¹ = 172104371 is a prime.

It is a super-2 number, since 2×172106419² = 59241238922007122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (172106219) 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 3 ways as a sum of consecutive naturals, for example, 5061937 + ... + 5061970.

It is an arithmetic number, because the mean of its divisors is an integer number (45557586).

Almost surely, 2^172106419 is an apocalyptic number.

172106419 is a deficient number, since it is larger than the sum of its proper divisors (10123925).

172106419 is a wasteful number, since it uses less digits than its factorization.

172106419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10123924.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 172106419 is about 13118.9336075765. The cubic root of 172106419 is about 556.2444483055.

The spelling of 172106419 in words is "one hundred seventy-two million, one hundred six thousand, four hundred nineteen".