1243402241342 has 16 divisors (see below), whose sum is σ = 1909498136832. Its totient is φ = 606918321240.

The previous prime is 1243402241317. The next prime is 1243402241443. The reversal of 1243402241342 is 2431422043421.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1243402241299 and 1243402241308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3702848 + ... + 4024659.

It is an arithmetic number, because the mean of its divisors is an integer number (119343633552).

Almost surely, 2^{1243402241342} is an apocalyptic number.

1243402241342 is a deficient number, since it is larger than the sum of its proper divisors (666095895490).

1243402241342 is a wasteful number, since it uses less digits than its factorization.

1243402241342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7729423.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 1243402241342 its reverse (2431422043421), we get a palindrome (3674824284763).

The spelling of 1243402241342 in words is "one trillion, two hundred forty-three billion, four hundred two million, two hundred forty-one thousand, three hundred forty-two".