2134209 has 16 divisors (see below), whose sum is σ = 3548160. Its totient is φ = 1108560.

The previous prime is 2134201. The next prime is 2134241. The reversal of 2134209 is 9024312.

It is not a de Polignac number, because 2134209 - 2³ = 2134201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2134201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4389 + ... + 4850.

It is an arithmetic number, because the mean of its divisors is an integer number (221760).

2^2134209 is an apocalyptic number.

It is an amenable number.

2134209 is a deficient number, since it is larger than the sum of its proper divisors (1413951).

2134209 is a wasteful number, since it uses less digits than its factorization.

2134209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9260.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 2134209 is about 1460.8932199172. The cubic root of 2134209 is about 128.7495290145.

The spelling of 2134209 in words is "two million, one hundred thirty-four thousand, two hundred nine".