400542222334340 has 48 divisors (see below), whose sum is σ = 847409407891200. Its totient is φ = 159026829276672.

The previous prime is 400542222334291. The next prime is 400542222334343. The reversal of 400542222334340 is 43433222245004.

It is a junction number, because it is equal to n+sod(n) for n = 400542222334294 and 400542222334303.

It is not an unprimeable number, because it can be changed into a prime (400542222334343) 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 15 ways as a sum of consecutive naturals, for example, 135007205 + ... + 137942124.

It is an arithmetic number, because the mean of its divisors is an integer number (17654362664400).

Almost surely, 2^{400542222334340} is an apocalyptic number.

It is an amenable number.

400542222334340 is an abundant number, since it is smaller than the sum of its proper divisors (446867185556860).

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

400542222334340 is a wasteful number, since it uses less digits than its factorization.

400542222334340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272949884 (or 272949882 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 38.

Adding to 400542222334340 its reverse (43433222245004), we get a palindrome (443975444579344).

The spelling of 400542222334340 in words is "four hundred trillion, five hundred forty-two billion, two hundred twenty-two million, three hundred thirty-four thousand, three hundred forty".