117142309 has 2 divisors, whose sum is σ = 117142310. Its totient is φ = 117142308.

The previous prime is 117142303. The next prime is 117142343. The reversal of 117142309 is 903241711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116964225 + 178084 = 10815^2 + 422^2 .

It is a cyclic number.

It is not a de Polignac number, because 117142309 - 2³ = 117142301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117142301) 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, 58571154 + 58571155.

It is an arithmetic number, because the mean of its divisors is an integer number (58571155).

Almost surely, 2^117142309 is an apocalyptic number.

It is an amenable number.

117142309 is a deficient number, since it is larger than the sum of its proper divisors (1).

117142309 is an equidigital number, since it uses as much as digits as its factorization.

117142309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 117142309 is about 10823.2300631558. The cubic root of 117142309 is about 489.2955433133.

The spelling of 117142309 in words is "one hundred seventeen million, one hundred forty-two thousand, three hundred nine".