2143243440442 has 8 divisors (see below), whose sum is σ = 3462162480756. Its totient is φ = 989189280192.

The previous prime is 2143243440421. The next prime is 2143243440449. The reversal of 2143243440442 is 2440443423412.

It can be written as a sum of positive squares in 2 ways, for example, as 2141015694841 + 2227745601 = 1463221^2 + 47199^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2143243440449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41216219983 + ... + 41216220034.

Almost surely, 2^{2143243440442} is an apocalyptic number.

2143243440442 is a deficient number, since it is larger than the sum of its proper divisors (1318919040314).

2143243440442 is a wasteful number, since it uses less digits than its factorization.

2143243440442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82432440032.

The product of its (nonzero) digits is 294912, while the sum is 37.

Adding to 2143243440442 its reverse (2440443423412), we get a palindrome (4583686863854).

The spelling of 2143243440442 in words is "two trillion, one hundred forty-three billion, two hundred forty-three million, four hundred forty thousand, four hundred forty-two".