1243321401142 has 8 divisors (see below), whose sum is σ = 1865442717000. Its totient is φ = 621507162144.

The previous prime is 1243321401097. The next prime is 1243321401169. The reversal of 1243321401142 is 2411041233421.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1243321401142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76759092 + ... + 76775287.

It is an arithmetic number, because the mean of its divisors is an integer number (233180339625).

Almost surely, 2^{1243321401142} is an apocalyptic number.

1243321401142 is a deficient number, since it is larger than the sum of its proper divisors (622121315858).

1243321401142 is a wasteful number, since it uses less digits than its factorization.

1243321401142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153538430.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 1243321401142 its reverse (2411041233421), we get a palindrome (3654362634563).

The spelling of 1243321401142 in words is "one trillion, two hundred forty-three billion, three hundred twenty-one million, four hundred one thousand, one hundred forty-two".