12143377 has 4 divisors (see below), whose sum is σ = 12153856. Its totient is φ = 12132900.

The previous prime is 12143371. The next prime is 12143387. The reversal of 12143377 is 77334121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12143377 - 2¹¹ = 12141329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12143371) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3249 + ... + 5902.

It is an arithmetic number, because the mean of its divisors is an integer number (3038464).

Almost surely, 2^12143377 is an apocalyptic number.

It is an amenable number.

12143377 is a deficient number, since it is larger than the sum of its proper divisors (10479).

12143377 is an equidigital number, since it uses as much as digits as its factorization.

12143377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10478.

The product of its digits is 3528, while the sum is 28.

The square root of 12143377 is about 3484.7348536151. The cubic root of 12143377 is about 229.8510503779.

Adding to 12143377 its reverse (77334121), we get a palindrome (89477498).

The spelling of 12143377 in words is "twelve million, one hundred forty-three thousand, three hundred seventy-seven".