103240105 has 4 divisors (see below), whose sum is σ = 123888132. Its totient is φ = 82592080.

The previous prime is 103240103. The next prime is 103240117. The reversal of 103240105 is 501042301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 501042301 = 179 ⋅2799119.

It can be written as a sum of positive squares in 2 ways, for example, as 77158656 + 26081449 = 8784^2 + 5107^2 .

It is not a de Polignac number, because 103240105 - 2¹ = 103240103 is a prime.

It is a super-2 number, since 2×103240105² = 21317038560822050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103240103) 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 in 3 ways as a sum of consecutive naturals, for example, 10324006 + ... + 10324015.

It is an arithmetic number, because the mean of its divisors is an integer number (30972033).

Almost surely, 2^103240105 is an apocalyptic number.

It is an amenable number.

103240105 is a deficient number, since it is larger than the sum of its proper divisors (20648027).

103240105 is an equidigital number, since it uses as much as digits as its factorization.

103240105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20648026.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 103240105 is about 10160.7138036656. The cubic root of 103240105 is about 469.1187727973.

Adding to 103240105 its reverse (501042301), we get a palindrome (604282406).

The spelling of 103240105 in words is "one hundred three million, two hundred forty thousand, one hundred five".