120142500 has 120 divisors (see below), whose sum is σ = 356360928. Its totient is φ = 31488000.

The previous prime is 120142499. The next prime is 120142513. The reversal of 120142500 is 5241021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 120142500.

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 622404 + ... + 622596.

Almost surely, 2^120142500 is an apocalyptic number.

120142500 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 120142500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178180464).

120142500 is an abundant number, since it is smaller than the sum of its proper divisors (236218428).

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

120142500 is a wasteful number, since it uses less digits than its factorization.

120142500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 120142500 is about 10960.9534256834. The cubic root of 120142500 is about 493.4375794230.

Adding to 120142500 its reverse (5241021), we get a palindrome (125383521).

The spelling of 120142500 in words is "one hundred twenty million, one hundred forty-two thousand, five hundred".