120990500 has 24 divisors (see below), whose sum is σ = 264244344. Its totient is φ = 48396000.

The previous prime is 120990473. The next prime is 120990503. The reversal of 120990500 is 5099021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1700416 + 119290084 = 1304^2 + 10922^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 120990500.

It is not an unprimeable number, because it can be changed into a prime (120990503) 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 7 ways as a sum of consecutive naturals, for example, 120491 + ... + 121490.

It is an arithmetic number, because the mean of its divisors is an integer number (11010181).

Almost surely, 2^120990500 is an apocalyptic number.

120990500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120990500 is an abundant number, since it is smaller than the sum of its proper divisors (143253844).

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

120990500 is a wasteful number, since it uses less digits than its factorization.

120990500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242000 (or 241988 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 120990500 is about 10999.5681733421. The cubic root of 120990500 is about 494.5957996801.

The spelling of 120990500 in words is "one hundred twenty million, nine hundred ninety thousand, five hundred".