172119 has 4 divisors (see below), whose sum is σ = 229496. Its totient is φ = 114744.

The previous prime is 172097. The next prime is 172127. The reversal of 172119 is 911271.

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

It is not a de Polignac number, because 172119 - 2⁸ = 171863 is a prime.

It is a super-2 number, since 2×172119² = 59249900322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

172119 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 172095 and 172104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28684 + ... + 28689.

It is an arithmetic number, because the mean of its divisors is an integer number (57374).

2¹⁷²¹¹⁹ is an apocalyptic number.

172119 is a deficient number, since it is larger than the sum of its proper divisors (57377).

172119 is an equidigital number, since it uses as much as digits as its factorization.

172119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57376.

The product of its digits is 126, while the sum is 21.

The square root of 172119 is about 414.8722694999. The cubic root of 172119 is about 55.6258001821.

The spelling of 172119 in words is "one hundred seventy-two thousand, one hundred nineteen".