120645120 has 160 divisors (see below), whose sum is σ = 403045632. Its totient is φ = 30728192.

The previous prime is 120645113. The next prime is 120645131. The reversal of 120645120 is 21546021.

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

It is a zygodrome in base 2.

It is a congruent number.

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, 176299 + ... + 176981.

Almost surely, 2^120645120 is an apocalyptic number.

120645120 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 120645120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201522816).

120645120 is an abundant number, since it is smaller than the sum of its proper divisors (282400512).

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

120645120 is an equidigital number, since it uses as much as digits as its factorization.

120645120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732 (or 716 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 120645120 is about 10983.8572459769. The cubic root of 120645120 is about 494.1247260557.

Subtracting from 120645120 its reverse (21546021), we obtain a palindrome (99099099).

The spelling of 120645120 in words is "one hundred twenty million, six hundred forty-five thousand, one hundred twenty".