7130209 has 4 divisors (see below), whose sum is σ = 7251120. Its totient is φ = 7009300.

The previous prime is 7130197. The next prime is 7130213. The reversal of 7130209 is 9020317.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7130209 - 2⁵ = 7130177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7130209.

It is not an unprimeable number, because it can be changed into a prime (7130239) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 60367 + ... + 60484.

It is an arithmetic number, because the mean of its divisors is an integer number (1812780).

Almost surely, 2^7130209 is an apocalyptic number.

It is an amenable number.

7130209 is a deficient number, since it is larger than the sum of its proper divisors (120911).

7130209 is a wasteful number, since it uses less digits than its factorization.

7130209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120910.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 7130209 is about 2670.2451198345. The cubic root of 7130209 is about 192.4719383394.

The spelling of 7130209 in words is "seven million, one hundred thirty thousand, two hundred nine".