1243344343242 has 8 divisors (see below), whose sum is σ = 2486688686496. Its totient is φ = 414448114412.

The previous prime is 1243344343229. The next prime is 1243344343249. The reversal of 1243344343242 is 2423434433421.

It is a happy number.

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

1243344343242 is an admirable number.

It is a super-2 number, since 2×1243344343242² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1243344343242.

It is not an unprimeable number, because it can be changed into a prime (1243344343249) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 103612028598 + ... + 103612028609.

It is an arithmetic number, because the mean of its divisors is an integer number (310836085812).

Almost surely, 2^{1243344343242} is an apocalyptic number.

1243344343242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1243344343242 is a wasteful number, since it uses less digits than its factorization.

1243344343242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207224057212.

The product of its digits is 663552, while the sum is 39.

Adding to 1243344343242 its reverse (2423434433421), we get a palindrome (3666778776663).

The spelling of 1243344343242 in words is "one trillion, two hundred forty-three billion, three hundred forty-four million, three hundred forty-three thousand, two hundred forty-two".