120201520 has 80 divisors (see below), whose sum is σ = 291677760. Its totient is φ = 46011392.

The previous prime is 120201451. The next prime is 120201541. The reversal of 120201520 is 25102021.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 120201520.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 456909 + ... + 457171.

It is an arithmetic number, because the mean of its divisors is an integer number (3645972).

Almost surely, 2^120201520 is an apocalyptic number.

120201520 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 120201520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145838880).

120201520 is an abundant number, since it is smaller than the sum of its proper divisors (171476240).

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

120201520 is a wasteful number, since it uses less digits than its factorization.

120201520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 496 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 120201520 is about 10963.6453791611. The cubic root of 120201520 is about 493.5183665949.

Adding to 120201520 its reverse (25102021), we get a palindrome (145303541).

The spelling of 120201520 in words is "one hundred twenty million, two hundred one thousand, five hundred twenty".