102000109 has 2 divisors, whose sum is σ = 102000110. Its totient is φ = 102000108.

The previous prime is 102000077. The next prime is 102000131. The reversal of 102000109 is 901000201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55800900 + 46199209 = 7470^2 + 6797^2 .

It is an emirp because it is prime and its reverse (901000201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102000109 - 2⁵ = 102000077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102000209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51000054 + 51000055.

It is an arithmetic number, because the mean of its divisors is an integer number (51000055).

Almost surely, 2^102000109 is an apocalyptic number.

It is an amenable number.

102000109 is a deficient number, since it is larger than the sum of its proper divisors (1).

102000109 is an equidigital number, since it uses as much as digits as its factorization.

102000109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 102000109 is about 10099.5103346647. The cubic root of 102000109 is about 467.2330392681.

The spelling of 102000109 in words is "one hundred two million, one hundred nine", and thus it is an aban number.