120855800 has 192 divisors, whose sum is σ = 329978880. Its totient is φ = 40803840.

The previous prime is 120855797. The next prime is 120855803. The reversal of 120855800 is 8558021.

It is an interprime number because it is at equal distance from previous prime (120855797) and next prime (120855803).

It is a super-2 number, since 2×120855800² = 29212248787280000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120855803) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2571377 + ... + 2571423.

It is an arithmetic number, because the mean of its divisors is an integer number (1718640).

Almost surely, 2^120855800 is an apocalyptic number.

120855800 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 120855800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164989440).

120855800 is an abundant number, since it is smaller than the sum of its proper divisors (209123080).

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

120855800 is a wasteful number, since it uses less digits than its factorization.

120855800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 120855800 is about 10993.4435005598. The cubic root of 120855800 is about 494.4121852828.

The spelling of 120855800 in words is "one hundred twenty million, eight hundred fifty-five thousand, eight hundred".