120812500 has 42 divisors (see below), whose sum is σ = 264410678. Its totient is φ = 48300000.

The previous prime is 120812453. The next prime is 120812501. The reversal of 120812500 is 5218021.

It can be written as a sum of positive squares in 7 ways, for example, as 120384784 + 427716 = 10972^2 + 654^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120812501) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 61534 + ... + 63466.

Almost surely, 2^120812500 is an apocalyptic number.

120812500 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 120812500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132205339).

120812500 is an abundant number, since it is smaller than the sum of its proper divisors (143598178).

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

120812500 is an frugal number, since it uses more digits than its factorization.

120812500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967 (or 1940 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 120812500 is about 10991.4739684903. The cubic root of 120812500 is about 494.3531325252.

The spelling of 120812500 in words is "one hundred twenty million, eight hundred twelve thousand, five hundred".