102119209 has 2 divisors, whose sum is σ = 102119210. Its totient is φ = 102119208.

The previous prime is 102119201. The next prime is 102119219. The reversal of 102119209 is 902911201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61669609 + 40449600 = 7853^2 + 6360^2 .

It is a cyclic number.

It is not a de Polignac number, because 102119209 - 2³ = 102119201 is a prime.

It is not a weakly prime, because it can be changed into another prime (102119201) 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, 51059604 + 51059605.

It is an arithmetic number, because the mean of its divisors is an integer number (51059605).

Almost surely, 2^102119209 is an apocalyptic number.

It is an amenable number.

102119209 is a deficient number, since it is larger than the sum of its proper divisors (1).

102119209 is an equidigital number, since it uses as much as digits as its factorization.

102119209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 102119209 is about 10105.4049399319. The cubic root of 102119209 is about 467.4148227672.

The spelling of 102119209 in words is "one hundred two million, one hundred nineteen thousand, two hundred nine".