12126573 has 6 divisors (see below), whose sum is σ = 17516174. Its totient is φ = 8084376.

The previous prime is 12126571. The next prime is 12126619. The reversal of 12126573 is 37562121.

It is a happy number.

12126573 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 657 + 3 = 666.

12126573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8277129 + 3849444 = 2877^2 + 1962^2 .

It is not a de Polignac number, because 12126573 - 2¹ = 12126571 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12126571) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 673690 + ... + 673707.

Almost surely, 2^12126573 is an apocalyptic number.

It is an amenable number.

12126573 is a deficient number, since it is larger than the sum of its proper divisors (5389601).

12126573 is a wasteful number, since it uses less digits than its factorization.

12126573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347403 (or 1347400 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 12126573 is about 3482.3229316076. The cubic root of 12126573 is about 229.7449788399.

Adding to 12126573 its reverse (37562121), we get a palindrome (49688694).

The spelling of 12126573 in words is "twelve million, one hundred twenty-six thousand, five hundred seventy-three".