126803209 has 8 divisors (see below), whose sum is σ = 142494912. Its totient is φ = 111959760.

The previous prime is 126803203. The next prime is 126803219. The reversal of 126803209 is 902308621.

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

It is a cyclic number.

It is not a de Polignac number, because 126803209 - 2⁷ = 126803081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126803203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211747 + ... + 212344.

It is an arithmetic number, because the mean of its divisors is an integer number (17811864).

Almost surely, 2^126803209 is an apocalyptic number.

It is an amenable number.

126803209 is a deficient number, since it is larger than the sum of its proper divisors (15691703).

126803209 is a wasteful number, since it uses less digits than its factorization.

126803209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424127.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 126803209 is about 11260.6930958978. The cubic root of 126803209 is about 502.3928093269.

The spelling of 126803209 in words is "one hundred twenty-six million, eight hundred three thousand, two hundred nine".