120491520 has 160 divisors (see below), whose sum is σ = 399215520. Its totient is φ = 30965760.

The previous prime is 120491509. The next prime is 120491533. The reversal of 120491520 is 25194021.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222450 + ... + 222990.

It is an arithmetic number, because the mean of its divisors is an integer number (2495097).

Almost surely, 2^120491520 is an apocalyptic number.

120491520 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 120491520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199607760).

120491520 is an abundant number, since it is smaller than the sum of its proper divisors (278724000).

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

120491520 is an equidigital number, since it uses as much as digits as its factorization.

120491520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596 (or 580 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 120491520 is about 10976.8629398385. The cubic root of 120491520 is about 493.9149377926.

It can be divided in two parts, 120 and 491520, that multiplied together give a square (58982400 = 7680²).

The spelling of 120491520 in words is "one hundred twenty million, four hundred ninety-one thousand, five hundred twenty".