120012500 has 36 divisors (see below), whose sum is σ = 262537884. Its totient is φ = 48000000.

The previous prime is 120012491. The next prime is 120012517. The reversal of 120012500 is 5210021.

It can be written as a sum of positive squares in 6 ways, for example, as 84419344 + 35593156 = 9188^2 + 5966^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7700 + ... + 17300.

It is an arithmetic number, because the mean of its divisors is an integer number (7292719).

Almost surely, 2^120012500 is an apocalyptic number.

120012500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120012500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131268942).

120012500 is an abundant number, since it is smaller than the sum of its proper divisors (142525384).

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

120012500 is an frugal number, since it uses more digits than its factorization.

120012500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9630 (or 9608 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 120012500 is about 10955.0216795769. The cubic root of 120012500 is about 493.2595407442.

Adding to 120012500 its reverse (5210021), we get a palindrome (125222521).

The spelling of 120012500 in words is "one hundred twenty million, twelve thousand, five hundred".