12124305 has 12 divisors (see below), whose sum is σ = 21015540. Its totient is φ = 6466272.

The previous prime is 12124303. The next prime is 12124313. The reversal of 12124305 is 50342121.

It can be written as a sum of positive squares in 2 ways, for example, as 2742336 + 9381969 = 1656^2 + 3063^2 .

It is not a de Polignac number, because 12124305 - 2¹ = 12124303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12124303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134670 + ... + 134759.

It is an arithmetic number, because the mean of its divisors is an integer number (1751295).

Almost surely, 2^12124305 is an apocalyptic number.

12124305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12124305 is a deficient number, since it is larger than the sum of its proper divisors (8891235).

12124305 is a wasteful number, since it uses less digits than its factorization.

12124305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269440 (or 269437 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12124305 is about 3481.9972716819. The cubic root of 12124305 is about 229.7306550871.

Adding to 12124305 its reverse (50342121), we get a palindrome (62466426).

The spelling of 12124305 in words is "twelve million, one hundred twenty-four thousand, three hundred five".