1200430009 has 2 divisors, whose sum is σ = 1200430010. Its totient is φ = 1200430008.

The previous prime is 1200429983. The next prime is 1200430057. The reversal of 1200430009 is 9000340021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1187491600 + 12938409 = 34460^2 + 3597^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200430009 - 2²¹ = 1198332857 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200430069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600215004 + 600215005.

It is an arithmetic number, because the mean of its divisors is an integer number (600215005).

Almost surely, 2^1200430009 is an apocalyptic number.

It is an amenable number.

1200430009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200430009 is an equidigital number, since it uses as much as digits as its factorization.

1200430009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1200430009 is about 34647.2222407511. Note that the first 4 decimals coincide. The cubic root of 1200430009 is about 1062.7854853431.

The spelling of 1200430009 in words is "one billion, two hundred million, four hundred thirty thousand, nine".