1242143140412 has 6 divisors (see below), whose sum is σ = 2173750495728. Its totient is φ = 621071570204.

The previous prime is 1242143140409. The next prime is 1242143140417. The reversal of 1242143140412 is 2140413412421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242143140417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155267892548 + ... + 155267892555.

It is an arithmetic number, because the mean of its divisors is an integer number (362291749288).

Almost surely, 2^{1242143140412} is an apocalyptic number.

It is an amenable number.

1242143140412 is a deficient number, since it is larger than the sum of its proper divisors (931607355316).

1242143140412 is a wasteful number, since it uses less digits than its factorization.

1242143140412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310535785107 (or 310535785105 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 1242143140412 its reverse (2140413412421), we get a palindrome (3382556552833).

The spelling of 1242143140412 in words is "one trillion, two hundred forty-two billion, one hundred forty-three million, one hundred forty thousand, four hundred twelve".