120430109 has 2 divisors, whose sum is σ = 120430110. Its totient is φ = 120430108.

The previous prime is 120430097. The next prime is 120430169. The reversal of 120430109 is 901034021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100600900 + 19829209 = 10030^2 + 4453^2 .

It is an emirp because it is prime and its reverse (901034021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120430109 is a prime.

It is a super-2 number, since 2×120430109² = 29006822307503762, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120430169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60215054 + 60215055.

It is an arithmetic number, because the mean of its divisors is an integer number (60215055).

Almost surely, 2^120430109 is an apocalyptic number.

It is an amenable number.

120430109 is a deficient number, since it is larger than the sum of its proper divisors (1).

120430109 is an equidigital number, since it uses as much as digits as its factorization.

120430109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 120430109 is about 10974.0652904929. The cubic root of 120430109 is about 493.8310122052.

It can be divided in two parts, 1204 and 30109, that added together give a palindrome (31313).

The spelling of 120430109 in words is "one hundred twenty million, four hundred thirty thousand, one hundred nine".