1200030109 has 2 divisors, whose sum is σ = 1200030110. Its totient is φ = 1200030108.

The previous prime is 1200030089. The next prime is 1200030127. The reversal of 1200030109 is 9010300021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 688275225 + 511754884 = 26235^2 + 22622^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200030109 - 2⁷ = 1200029981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200030092 and 1200030101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200030149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600015054 + 600015055.

It is an arithmetic number, because the mean of its divisors is an integer number (600015055).

Almost surely, 2^1200030109 is an apocalyptic number.

It is an amenable number.

1200030109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200030109 is an equidigital number, since it uses as much as digits as its factorization.

1200030109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1200030109 is about 34641.4507346329. The cubic root of 1200030109 is about 1062.6674567713.

The spelling of 1200030109 in words is "one billion, two hundred million, thirty thousand, one hundred nine".