4123305 has 20 divisors (see below), whose sum is σ = 7392132. Its totient is φ = 2198880.

The previous prime is 4123303. The next prime is 4123319. The reversal of 4123305 is 5033214.

It can be written as a sum of positive squares in 2 ways, for example, as 1971216 + 2152089 = 1404^2 + 1467^2 .

It is not a de Polignac number, because 4123305 - 2¹ = 4123303 is a prime.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (4123303) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4686 + ... + 5495.

Almost surely, 2^4123305 is an apocalyptic number.

4123305 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4123305 is a deficient number, since it is larger than the sum of its proper divisors (3268827).

4123305 is a wasteful number, since it uses less digits than its factorization.

4123305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10198 (or 10189 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 4123305 is about 2030.5922781297. The cubic root of 4123305 is about 160.3547467401.

Adding to 4123305 its reverse (5033214), we get a palindrome (9156519).

Subtracting 4123305 from its reverse (5033214), we obtain a palindrome (909909).

The spelling of 4123305 in words is "four million, one hundred twenty-three thousand, three hundred five".