10120309 has 2 divisors, whose sum is σ = 10120310. Its totient is φ = 10120308.

The previous prime is 10120307. The next prime is 10120339. The reversal of 10120309 is 90302101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6426225 + 3694084 = 2535^2 + 1922^2 .

It is a cyclic number.

It is not a de Polignac number, because 10120309 - 2¹ = 10120307 is a prime.

Together with 10120307, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 10120292 and 10120301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10120303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060154 + 5060155.

It is an arithmetic number, because the mean of its divisors is an integer number (5060155).

Almost surely, 2^10120309 is an apocalyptic number.

It is an amenable number.

10120309 is a deficient number, since it is larger than the sum of its proper divisors (1).

10120309 is an equidigital number, since it uses as much as digits as its factorization.

10120309 is an odious number, because the sum of its binary digits is odd.

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

The square root of 10120309 is about 3181.2433104055. The cubic root of 10120309 is about 216.3040200505.

The spelling of 10120309 in words is "ten million, one hundred twenty thousand, three hundred nine".