400234300443140 has 24 divisors (see below), whose sum is σ = 863208031768152. Its totient is φ = 155766862874880.

The previous prime is 400234300443077. The next prime is 400234300443143. The reversal of 400234300443140 is 41344003432004.

It can be written as a sum of positive squares in 4 ways, for example, as 132190344728836 + 268043955714304 = 11497406^2 + 16372048^2 .

It is a junction number, because it is equal to n+sod(n) for n = 400234300443097 and 400234300443106.

It is not an unprimeable number, because it can be changed into a prime (400234300443143) 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 7 ways as a sum of consecutive naturals, for example, 270428580641 + ... + 270428582120.

It is an arithmetic number, because the mean of its divisors is an integer number (35967001323673).

Almost surely, 2^{400234300443140} is an apocalyptic number.

It is an amenable number.

400234300443140 is an abundant number, since it is smaller than the sum of its proper divisors (462973731325012).

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

400234300443140 is a wasteful number, since it uses less digits than its factorization.

400234300443140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540857162807 (or 540857162805 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 400234300443140 its reverse (41344003432004), we get a palindrome (441578303875144).

The spelling of 400234300443140 in words is "four hundred trillion, two hundred thirty-four billion, three hundred million, four hundred forty-three thousand, one hundred forty".