103420109 has 4 divisors (see below), whose sum is σ = 111375516. Its totient is φ = 95464704.

The previous prime is 103420099. The next prime is 103420111. The reversal of 103420109 is 901024301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33028009 + 70392100 = 5747^2 + 8390^2 .

It is a cyclic number.

It is not a de Polignac number, because 103420109 - 2¹² = 103416013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103420169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3977684 + ... + 3977709.

It is an arithmetic number, because the mean of its divisors is an integer number (27843879).

Almost surely, 2^103420109 is an apocalyptic number.

It is an amenable number.

103420109 is a deficient number, since it is larger than the sum of its proper divisors (7955407).

103420109 is an equidigital number, since it uses as much as digits as its factorization.

103420109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7955406.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 103420109 is about 10169.5677882592. The cubic root of 103420109 is about 469.3912580753.

The spelling of 103420109 in words is "one hundred three million, four hundred twenty thousand, one hundred nine".