12124405 has 8 divisors (see below), whose sum is σ = 14614200. Its totient is φ = 9656256.

The previous prime is 12124369. The next prime is 12124423. The reversal of 12124405 is 50442121.

It can be written as a sum of positive squares in 4 ways, for example, as 1633284 + 10491121 = 1278^2 + 3239^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12124405 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4150 + ... + 6439.

It is an arithmetic number, because the mean of its divisors is an integer number (1826775).

Almost surely, 2^12124405 is an apocalyptic number.

It is an amenable number.

12124405 is a deficient number, since it is larger than the sum of its proper divisors (2489795).

12124405 is a wasteful number, since it uses less digits than its factorization.

12124405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10823.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 12124405 is about 3482.0116312270. The cubic root of 12124405 is about 229.7312866835.

Adding to 12124405 its reverse (50442121), we get a palindrome (62566526).

The spelling of 12124405 in words is "twelve million, one hundred twenty-four thousand, four hundred five".