120999528 has 128 divisors (see below), whose sum is σ = 371145600. Its totient is φ = 36288000.

The previous prime is 120999503. The next prime is 120999547. The reversal of 120999528 is 825999021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114603 + ... + 115653.

It is an arithmetic number, because the mean of its divisors is an integer number (2899575).

Almost surely, 2^120999528 is an apocalyptic number.

120999528 is a gapful number since it is divisible by the number (18) 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 120999528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185572800).

120999528 is an abundant number, since it is smaller than the sum of its proper divisors (250146072).

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

120999528 is a wasteful number, since it uses less digits than its factorization.

120999528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120 (or 1110 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 120999528 is about 10999.9785454336. The cubic root of 120999528 is about 494.6081011964.

The spelling of 120999528 in words is "one hundred twenty million, nine hundred ninety-nine thousand, five hundred twenty-eight".