1243132423424 has 72 divisors (see below), whose sum is σ = 2651929979328. Its totient is φ = 579535953920.

The previous prime is 1243132423411. The next prime is 1243132423487. The reversal of 1243132423424 is 4243242313421.

It is a happy number.

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 in 7 ways as a sum of consecutive naturals, for example, 869132 + ... + 1800459.

It is an arithmetic number, because the mean of its divisors is an integer number (36832360824).

Almost surely, 2^{1243132423424} is an apocalyptic number.

It is an amenable number.

1243132423424 is an abundant number, since it is smaller than the sum of its proper divisors (1408797555904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243132423424 is a wasteful number, since it uses less digits than its factorization.

1243132423424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2669731 (or 2669717 counting only the distinct ones).

The product of its digits is 110592, while the sum is 35.

Adding to 1243132423424 its reverse (4243242313421), we get a palindrome (5486374736845).

The spelling of 1243132423424 in words is "one trillion, two hundred forty-three billion, one hundred thirty-two million, four hundred twenty-three thousand, four hundred twenty-four".