205106 has 8 divisors (see below), whose sum is σ = 335664. Its totient is φ = 93220.

The previous prime is 205103. The next prime is 205111. The reversal of 205106 is 601502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (205103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4640 + ... + 4683.

It is an arithmetic number, because the mean of its divisors is an integer number (41958).

2²⁰⁵¹⁰⁶ is an apocalyptic number.

205106 is a deficient number, since it is larger than the sum of its proper divisors (130558).

205106 is a wasteful number, since it uses less digits than its factorization.

205106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9336.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 205106 is about 452.8862991966. The cubic root of 205106 is about 58.9738464952.

Adding to 205106 its sum of digits (14), we get a triangular number (205120 = T₆₄₀).

Adding to 205106 its reverse (601502), we get a palindrome (806608).

The spelling of 205106 in words is "two hundred five thousand, one hundred six".