126430809 has 8 divisors (see below), whose sum is σ = 171090720. Its totient is φ = 83029056.

The previous prime is 126430783. The next prime is 126430831. The reversal of 126430809 is 908034621.

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

It is not a de Polignac number, because 126430809 - 2⁸ = 126430553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126430809.

It is not an unprimeable number, because it can be changed into a prime (126430849) 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, 314304 + ... + 314705.

It is an arithmetic number, because the mean of its divisors is an integer number (21386340).

Almost surely, 2^126430809 is an apocalyptic number.

It is an amenable number.

126430809 is a deficient number, since it is larger than the sum of its proper divisors (44659911).

126430809 is an equidigital number, since it uses as much as digits as its factorization.

126430809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629079.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 126430809 is about 11244.1455433483. The cubic root of 126430809 is about 501.9005122867.

The spelling of 126430809 in words is "one hundred twenty-six million, four hundred thirty thousand, eight hundred nine".