40042444243143 has 8 divisors (see below), whose sum is σ = 53389957276656. Its totient is φ = 26694947019200.

The previous prime is 40042444243141. The next prime is 40042444243171. The reversal of 40042444243143 is 34134244424004.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40042444243143 - 2¹ = 40042444243141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40042444243141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4603153 + ... + 10063493.

It is an arithmetic number, because the mean of its divisors is an integer number (6673744659582).

Almost surely, 2^{40042444243143} is an apocalyptic number.

40042444243143 is a deficient number, since it is larger than the sum of its proper divisors (13347513033513).

40042444243143 is a wasteful number, since it uses less digits than its factorization.

40042444243143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7904785.

The product of its (nonzero) digits is 589824, while the sum is 39.

Adding to 40042444243143 its reverse (34134244424004), we get a palindrome (74176688667147).

The spelling of 40042444243143 in words is "forty trillion, forty-two billion, four hundred forty-four million, two hundred forty-three thousand, one hundred forty-three".