543121121140 has 48 divisors (see below), whose sum is σ = 1261486335312. Its totient is φ = 195117106176.

The previous prime is 543121121117. The next prime is 543121121141. The reversal of 543121121140 is 41121121345.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 65554433296 + 477566687844 = 256036^2 + 691062^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543121121141) 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, 28219129 + ... + 28238368.

It is an arithmetic number, because the mean of its divisors is an integer number (26280965319).

Almost surely, 2^543121121140 is an apocalyptic number.

It is an amenable number.

543121121140 is an abundant number, since it is smaller than the sum of its proper divisors (718365214172).

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

543121121140 is a wasteful number, since it uses less digits than its factorization.

543121121140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56457556 (or 56457554 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 543121121140 its reverse (41121121345), we get a palindrome (584242242485).

The spelling of 543121121140 in words is "five hundred forty-three billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred forty".