120240520 has 16 divisors (see below), whose sum is σ = 270541260. Its totient is φ = 48096192.

The previous prime is 120240509. The next prime is 120240529. The reversal of 120240520 is 25042021.

It can be written as a sum of positive squares in 2 ways, for example, as 120165444 + 75076 = 10962^2 + 274^2 .

It is a junction number, because it is equal to n+sod(n) for n = 120240494 and 120240503.

It is not an unprimeable number, because it can be changed into a prime (120240529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1502967 + ... + 1503046.

Almost surely, 2^120240520 is an apocalyptic number.

120240520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120240520 is an abundant number, since it is smaller than the sum of its proper divisors (150300740).

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

120240520 is a wasteful number, since it uses less digits than its factorization.

120240520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3006024 (or 3006020 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 120240520 is about 10965.4238404177. The cubic root of 120240520 is about 493.5717356789.

Adding to 120240520 its reverse (25042021), we get a palindrome (145282541).

The spelling of 120240520 in words is "one hundred twenty million, two hundred forty thousand, five hundred twenty".