12124945 has 16 divisors (see below), whose sum is σ = 17504640. Its totient is φ = 7876224.

The previous prime is 12124943. The next prime is 12124991. The reversal of 12124945 is 54942121.

It is a cyclic number.

It is not a de Polignac number, because 12124945 - 2¹ = 12124943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12124943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8452 + ... + 9781.

It is an arithmetic number, because the mean of its divisors is an integer number (1094040).

Almost surely, 2^12124945 is an apocalyptic number.

It is an amenable number.

12124945 is a deficient number, since it is larger than the sum of its proper divisors (5379695).

12124945 is a wasteful number, since it uses less digits than its factorization.

12124945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18264.

The product of its digits is 2880, while the sum is 28.

The square root of 12124945 is about 3482.0891717473. The cubic root of 12124945 is about 229.7346972441.

The spelling of 12124945 in words is "twelve million, one hundred twenty-four thousand, nine hundred forty-five".