120641550 has 48 divisors (see below), whose sum is σ = 300985200. Its totient is φ = 31978240.

The previous prime is 120641501. The next prime is 120641581. The reversal of 120641550 is 55146021.

It is a self number, because there is not a number n which added to its sum of digits gives 120641550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23626 + ... + 28274.

It is an arithmetic number, because the mean of its divisors is an integer number (6270525).

Almost surely, 2^120641550 is an apocalyptic number.

120641550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 120641550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150492600).

120641550 is an abundant number, since it is smaller than the sum of its proper divisors (180343650).

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

120641550 is a wasteful number, since it uses less digits than its factorization.

120641550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4837 (or 4832 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 120641550 is about 10983.6947335585. The cubic root of 120641550 is about 494.1198521394.

Adding to 120641550 its reverse (55146021), we get a palindrome (175787571).

The spelling of 120641550 in words is "one hundred twenty million, six hundred forty-one thousand, five hundred fifty".