12507133 has 4 divisors (see below), whose sum is σ = 12631068. Its totient is φ = 12383200.

The previous prime is 12507107. The next prime is 12507137. The reversal of 12507133 is 33170521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33170521 = 101 ⋅328421.

It can be written as a sum of positive squares in 2 ways, for example, as 8398404 + 4108729 = 2898^2 + 2027^2 .

It is a cyclic number.

It is not a de Polignac number, because 12507133 - 2²¹ = 10409981 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12507137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61816 + ... + 62017.

It is an arithmetic number, because the mean of its divisors is an integer number (3157767).

Almost surely, 2^12507133 is an apocalyptic number.

It is an amenable number.

12507133 is a deficient number, since it is larger than the sum of its proper divisors (123935).

12507133 is a wasteful number, since it uses less digits than its factorization.

12507133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123934.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 12507133 is about 3536.5425205983. The cubic root of 12507133 is about 232.1235778906.

Adding to 12507133 its reverse (33170521), we get a palindrome (45677654).

The spelling of 12507133 in words is "twelve million, five hundred seven thousand, one hundred thirty-three".