120015500 has 48 divisors (see below), whose sum is σ = 285955488. Its totient is φ = 43640000.

The previous prime is 120015409. The next prime is 120015503. The reversal of 120015500 is 5510021.

It is not an unprimeable number, because it can be changed into a prime (120015503) 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 15 ways as a sum of consecutive naturals, for example, 5411 + ... + 16410.

It is an arithmetic number, because the mean of its divisors is an integer number (5957406).

Almost surely, 2^120015500 is an apocalyptic number.

120015500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120015500 is an abundant number, since it is smaller than the sum of its proper divisors (165939988).

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

120015500 is a wasteful number, since it uses less digits than its factorization.

120015500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21851 (or 21839 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 120015500 is about 10955.1586022294. The cubic root of 120015500 is about 493.2636507780.

Adding to 120015500 its reverse (5510021), we get a palindrome (125525521).

The spelling of 120015500 in words is "one hundred twenty million, fifteen thousand, five hundred".