12143200424 has 8 divisors (see below), whose sum is σ = 22768500810. Its totient is φ = 6071600208.

The previous prime is 12143200423. The next prime is 12143200427. The reversal of 12143200424 is 42400234121.

It can be written as a sum of positive squares in only one way, i.e., 7014062500 + 5129137924 = 83750^2 + 71618^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 12143200424.

It is not an unprimeable number, because it can be changed into a prime (12143200423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 758950019 + ... + 758950034.

Almost surely, 2^12143200424 is an apocalyptic number.

It is an amenable number.

12143200424 is a deficient number, since it is larger than the sum of its proper divisors (10625300386).

12143200424 is a wasteful number, since it uses less digits than its factorization.

12143200424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517900059 (or 1517900055 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 12143200424 its reverse (42400234121), we get a palindrome (54543434545).

The spelling of 12143200424 in words is "twelve billion, one hundred forty-three million, two hundred thousand, four hundred twenty-four".