209126 has 8 divisors (see below), whose sum is σ = 323904. Its totient is φ = 101160.

The previous prime is 209123. The next prime is 209147. The reversal of 209126 is 621902.

209126 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 209098 and 209107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209123) 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, 1625 + ... + 1748.

It is an arithmetic number, because the mean of its divisors is an integer number (40488).

2²⁰⁹¹²⁶ is an apocalyptic number.

209126 is a deficient number, since it is larger than the sum of its proper divisors (114778).

209126 is a wasteful number, since it uses less digits than its factorization.

209126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3406.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 209126 is about 457.3029630344. The cubic root of 209126 is about 59.3566447417.

The spelling of 209126 in words is "two hundred nine thousand, one hundred twenty-six".