102003109 has 8 divisors (see below), whose sum is σ = 110109272. Its totient is φ = 93934080.

The previous prime is 102003071. The next prime is 102003127. The reversal of 102003109 is 901300201.

It can be written as a sum of positive squares in 4 ways, for example, as 1060900 + 100942209 = 1030^2 + 10047^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102003109 - 2⁷ = 102002981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102003092 and 102003101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102003149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3432 + ... + 14689.

It is an arithmetic number, because the mean of its divisors is an integer number (13763659).

Almost surely, 2^102003109 is an apocalyptic number.

It is an amenable number.

102003109 is a deficient number, since it is larger than the sum of its proper divisors (8106163).

102003109 is a wasteful number, since it uses less digits than its factorization.

102003109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18567.

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

The square root of 102003109 is about 10099.6588556248. The cubic root of 102003109 is about 467.2376199344.

The spelling of 102003109 in words is "one hundred two million, three thousand, one hundred nine".