540120124520 has 64 divisors (see below), whose sum is σ = 1263494160000. Its totient is φ = 207549796608.

The previous prime is 540120124501. The next prime is 540120124529. The reversal of 540120124520 is 25421021045.

It is a self number, because there is not a number n which added to its sum of digits gives 540120124520.

It is not an unprimeable number, because it can be changed into a prime (540120124529) 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, 939062 + ... + 1400741.

It is an arithmetic number, because the mean of its divisors is an integer number (19742096250).

Almost surely, 2^540120124520 is an apocalyptic number.

It is an amenable number.

540120124520 is an abundant number, since it is smaller than the sum of its proper divisors (723374035480).

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

540120124520 is a wasteful number, since it uses less digits than its factorization.

540120124520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2340042 (or 2340038 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 540120124520 its reverse (25421021045), we get a palindrome (565541145565).

The spelling of 540120124520 in words is "five hundred forty billion, one hundred twenty million, one hundred twenty-four thousand, five hundred twenty".