1243142340044 has 24 divisors (see below), whose sum is σ = 2386383753936. Its totient is φ = 561942792000.

The previous prime is 1243142339993. The next prime is 1243142340067. The reversal of 1243142340044 is 4400432413421.

It is a super-2 number, since 2×1243142340044² (a number of 25 digits) contains 22 as substring.

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, 78039647 + ... + 78055574.

It is an arithmetic number, because the mean of its divisors is an integer number (99432656414).

Almost surely, 2^{1243142340044} is an apocalyptic number.

It is an amenable number.

1243142340044 is a deficient number, since it is larger than the sum of its proper divisors (1143241413892).

1243142340044 is a wasteful number, since it uses less digits than its factorization.

1243142340044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156095417 (or 156095415 counting only the distinct ones).

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

Adding to 1243142340044 its reverse (4400432413421), we get a palindrome (5643574753465).

The spelling of 1243142340044 in words is "one trillion, two hundred forty-three billion, one hundred forty-two million, three hundred forty thousand, forty-four".