12427133 has 4 divisors (see below), whose sum is σ = 12517980. Its totient is φ = 12336288.

The previous prime is 12427117. The next prime is 12427139. The reversal of 12427133 is 33172421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33172421 = 751 ⋅44171.

It can be written as a sum of positive squares in 2 ways, for example, as 9406489 + 3020644 = 3067^2 + 1738^2 .

It is a cyclic number.

It is not a de Polignac number, because 12427133 - 2⁴ = 12427117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12427099 and 12427108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12427139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45218 + ... + 45491.

It is an arithmetic number, because the mean of its divisors is an integer number (3129495).

Almost surely, 2^12427133 is an apocalyptic number.

It is an amenable number.

12427133 is a deficient number, since it is larger than the sum of its proper divisors (90847).

12427133 is an equidigital number, since it uses as much as digits as its factorization.

12427133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90846.

The product of its digits is 1008, while the sum is 23.

The square root of 12427133 is about 3525.2138942198. The cubic root of 12427133 is about 231.6276043611.

Adding to 12427133 its reverse (33172421), we get a palindrome (45599554).

The spelling of 12427133 in words is "twelve million, four hundred twenty-seven thousand, one hundred thirty-three".