103240009 has 8 divisors (see below), whose sum is σ = 105891912. Its totient is φ = 100594560.

The previous prime is 103240001. The next prime is 103240021. The reversal of 103240009 is 900042301.

It can be written as a sum of positive squares in 4 ways, for example, as 15405625 + 87834384 = 3925^2 + 9372^2 .

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 103240009 - 2³ = 103240001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103240001) 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, 58707 + ... + 60439.

It is an arithmetic number, because the mean of its divisors is an integer number (13236489).

Almost surely, 2^103240009 is an apocalyptic number.

It is an amenable number.

103240009 is a deficient number, since it is larger than the sum of its proper divisors (2651903).

103240009 is a wasteful number, since it uses less digits than its factorization.

103240009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3227.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 103240009 is about 10160.7090795869. The cubic root of 103240009 is about 469.1186273906.

It can be divided in two parts, 1032 and 40009, that added together give a triangular number (41041 = T₂₈₆).

The spelling of 103240009 in words is "one hundred three million, two hundred forty thousand, nine".