109042720309 has 2 divisors, whose sum is σ = 109042720310. Its totient is φ = 109042720308.

The previous prime is 109042720291. The next prime is 109042720327. The reversal of 109042720309 is 903027240901.

It is a balanced prime because it is at equal distance from previous prime (109042720291) and next prime (109042720327).

It can be written as a sum of positive squares in only one way, i.e., 80611702084 + 28431018225 = 283922^2 + 168615^2 .

It is a cyclic number.

It is not a de Polignac number, because 109042720309 - 2¹³ = 109042712117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109042720909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54521360154 + 54521360155.

It is an arithmetic number, because the mean of its divisors is an integer number (54521360155).

Almost surely, 2^109042720309 is an apocalyptic number.

It is an amenable number.

109042720309 is a deficient number, since it is larger than the sum of its proper divisors (1).

109042720309 is an equidigital number, since it uses as much as digits as its factorization.

109042720309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

The spelling of 109042720309 in words is "one hundred nine billion, forty-two million, seven hundred twenty thousand, three hundred nine".