180106 has 4 divisors (see below), whose sum is σ = 270162. Its totient is φ = 90052.

The previous prime is 180097. The next prime is 180137. The reversal of 180106 is 601081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 601081 = 13 ⋅46237.

It can be written as a sum of positive squares in only one way, i.e., 152881 + 27225 = 391^2 + 165^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 180106.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 45025 + ... + 45028.

2¹⁸⁰¹⁰⁶ is an apocalyptic number.

180106 is a deficient number, since it is larger than the sum of its proper divisors (90056).

180106 is an equidigital number, since it uses as much as digits as its factorization.

180106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90055.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 180106 is about 424.3889725240. The cubic root of 180106 is about 56.4732428712.

Adding to 180106 its reverse (601081), we get a palindrome (781187).

The spelling of 180106 in words is "one hundred eighty thousand, one hundred six".