12143769 has 24 divisors (see below), whose sum is σ = 18161376. Its totient is φ = 7156800.

The previous prime is 12143767. The next prime is 12143773. The reversal of 12143769 is 96734121.

12143769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12143769 - 2¹ = 12143767 is a prime.

It is a super-2 number, since 2×12143769² = 294942251050722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (12143767) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 166317 + ... + 166389.

It is an arithmetic number, because the mean of its divisors is an integer number (756724).

Almost surely, 2^12143769 is an apocalyptic number.

It is an amenable number.

12143769 is a deficient number, since it is larger than the sum of its proper divisors (6017607).

12143769 is an equidigital number, since it uses as much as digits as its factorization.

12143769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 158 counting only the distinct ones).

The product of its digits is 9072, while the sum is 33.

The square root of 12143769 is about 3484.7910984735. The cubic root of 12143769 is about 229.8535236230.

The spelling of 12143769 in words is "twelve million, one hundred forty-three thousand, seven hundred sixty-nine".