1243143230432 has 12 divisors (see below), whose sum is σ = 2447438234976. Its totient is φ = 621571615200.

The previous prime is 1243143230423. The next prime is 1243143230453. The reversal of 1243143230432 is 2340323413421.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 38848225951 = 1243143230432 / (1 + 2 + 4 + 3 + 1 + 4 + 3 + 2 + 3 + 0 + 4 + 3 + 2).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19424112944 + ... + 19424113007.

It is an arithmetic number, because the mean of its divisors is an integer number (203953186248).

Almost surely, 2^{1243143230432} is an apocalyptic number.

It is an amenable number.

1243143230432 is a deficient number, since it is larger than the sum of its proper divisors (1204295004544).

1243143230432 is an equidigital number, since it uses as much as digits as its factorization.

1243143230432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38848225961 (or 38848225953 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 1243143230432 its reverse (2340323413421), we get a palindrome (3583466643853).

The spelling of 1243143230432 in words is "one trillion, two hundred forty-three billion, one hundred forty-three million, two hundred thirty thousand, four hundred thirty-two".