120621600 has 216 divisors, whose sum is σ = 464314032. Its totient is φ = 29222400.

The previous prime is 120621593. The next prime is 120621601. The reversal of 120621600 is 6126021.

It is a happy number.

120621600 is a `hidden beast` number, since 1 + 2 + 0 + 62 + 1 + 600 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (120621601) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 78439 + ... + 79961.

It is an arithmetic number, because the mean of its divisors is an integer number (2149602).

Almost surely, 2^120621600 is an apocalyptic number.

120621600 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 120621600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232157016).

120621600 is an abundant number, since it is smaller than the sum of its proper divisors (343692432).

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

120621600 is a wasteful number, since it uses less digits than its factorization.

120621600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560 (or 1544 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 120621600 is about 10982.7865316594. The cubic root of 120621600 is about 494.0926137778.

Adding to 120621600 its reverse (6126021), we get a palindrome (126747621).

The spelling of 120621600 in words is "one hundred twenty million, six hundred twenty-one thousand, six hundred".