120131520 has 168 divisors, whose sum is σ = 406109424. Its totient is φ = 30081024.

The previous prime is 120131513. The next prime is 120131527. The reversal of 120131520 is 25131021.

It is an interprime number because it is at equal distance from previous prime (120131513) and next prime (120131527).

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 120131520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120131527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 277224 + ... + 277656.

It is an arithmetic number, because the mean of its divisors is an integer number (2417318).

Almost surely, 2^120131520 is an apocalyptic number.

120131520 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 120131520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203054712).

120131520 is an abundant number, since it is smaller than the sum of its proper divisors (285977904).

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

120131520 is a wasteful number, since it uses less digits than its factorization.

120131520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 120131520 is about 10960.4525454016. The cubic root of 120131520 is about 493.4225469694.

Adding to 120131520 its reverse (25131021), we get a palindrome (145262541).

The spelling of 120131520 in words is "one hundred twenty million, one hundred thirty-one thousand, five hundred twenty".