120172 has 12 divisors (see below), whose sum is σ = 226576. Its totient is φ = 55440.

The previous prime is 120167. The next prime is 120181. The reversal of 120172 is 271021.

It is a hoax number, since the sum of its digits (13) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an Ulam number.

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, 1104 + ... + 1207.

2¹²⁰¹⁷² is an apocalyptic number.

It is an amenable number.

120172 is a deficient number, since it is larger than the sum of its proper divisors (106404).

120172 is a wasteful number, since it uses less digits than its factorization.

120172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2328 (or 2326 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 120172 is about 346.6583332332. The cubic root of 120172 is about 49.3477962627.

Adding to 120172 its reverse (271021), we get a palindrome (391193).

It can be divided in two parts, 120 and 172, that added together give a palindrome (292).

The spelling of 120172 in words is "one hundred twenty thousand, one hundred seventy-two", and thus it is an iban number.