540661330242 has 48 divisors (see below), whose sum is σ = 1279166765760. Its totient is φ = 163677794400.

The previous prime is 540661330207. The next prime is 540661330243. The reversal of 540661330242 is 242033166045.

540661330242 is a `hidden beast` number, since 5 + 4 + 0 + 6 + 613 + 30 + 2 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 540661330197 and 540661330206.

It is not an unprimeable number, because it can be changed into a prime (540661330243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1120117 + ... + 1528392.

It is an arithmetic number, because the mean of its divisors is an integer number (26649307620).

Almost surely, 2^540661330242 is an apocalyptic number.

540661330242 is an abundant number, since it is smaller than the sum of its proper divisors (738505435518).

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

540661330242 is a wasteful number, since it uses less digits than its factorization.

540661330242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2649559 (or 2649556 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

Adding to 540661330242 its reverse (242033166045), we get a palindrome (782694496287).

The spelling of 540661330242 in words is "five hundred forty billion, six hundred sixty-one million, three hundred thirty thousand, two hundred forty-two".