105120000 has 270 divisors, whose sum is σ = 383925542. Its totient is φ = 27648000.

The previous prime is 105119999. The next prime is 105120011. The reversal of 105120000 is 21501.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 37748736 + 67371264 = 6144^2 + 8208^2 .

It is a super-2 number, since 2×105120000² = 22100428800000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1439964 + ... + 1440036.

Almost surely, 2^105120000 is an apocalyptic number.

105120000 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 105120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191962771).

105120000 is an abundant number, since it is smaller than the sum of its proper divisors (278805542).

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

105120000 is an frugal number, since it uses more digits than its factorization.

105120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 9.

The square root of 105120000 is about 10252.8044943810. The cubic root of 105120000 is about 471.9490512851.

Adding to 105120000 its reverse (21501), we get a palindrome (105141501).

The spelling of 105120000 in words is "one hundred five million, one hundred twenty thousand".