400042142241144 has 64 divisors (see below), whose sum is σ = 1077701786179200. Its totient is φ = 123013861420416.

The previous prime is 400042142241143. The next prime is 400042142241167. The reversal of 400042142241144 is 441142241240004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400042142241143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 395475834 + ... + 396486089.

It is an arithmetic number, because the mean of its divisors is an integer number (16839090409050).

Almost surely, 2^{400042142241144} is an apocalyptic number.

It is an amenable number.

400042142241144 is an abundant number, since it is smaller than the sum of its proper divisors (677659643938056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400042142241144 is a wasteful number, since it uses less digits than its factorization.

400042142241144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791963564 (or 791963560 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 33.

Adding to 400042142241144 its reverse (441142241240004), we get a palindrome (841184383481148).

The spelling of 400042142241144 in words is "four hundred trillion, forty-two billion, one hundred forty-two million, two hundred forty-one thousand, one hundred forty-four".