1243412443 has 8 divisors (see below), whose sum is σ = 1530353888. Its totient is φ = 983798784.

The previous prime is 1243412413. The next prime is 1243412447. The reversal of 1243412443 is 3442143421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1243412443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1243412447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6831846 + ... + 6832027.

It is an arithmetic number, because the mean of its divisors is an integer number (191294236).

Almost surely, 2^1243412443 is an apocalyptic number.

1243412443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1243412443 is a deficient number, since it is larger than the sum of its proper divisors (286941445).

1243412443 is a wasteful number, since it uses less digits than its factorization.

1243412443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13663893.

The product of its digits is 9216, while the sum is 28.

The square root of 1243412443 is about 35262.0538681456. The cubic root of 1243412443 is about 1075.3216828539.

Adding to 1243412443 its reverse (3442143421), we get a palindrome (4685555864).

The spelling of 1243412443 in words is "one billion, two hundred forty-three million, four hundred twelve thousand, four hundred forty-three".