2126105280 has 448 divisors, whose sum is σ = 8438814720. Its totient is φ = 499986432.

The previous prime is 2126105279. The next prime is 2126105299. The reversal of 2126105280 is 825016212.

It is a happy number.

2126105280 is a `hidden beast` number, since 2 + 126 + 10 + 528 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2582949 + ... + 2583771.

It is an arithmetic number, because the mean of its divisors is an integer number (18836640).

Almost surely, 2^2126105280 is an apocalyptic number.

2126105280 is a gapful number since it is divisible by the number (20) 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 2126105280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4219407360).

2126105280 is an abundant number, since it is smaller than the sum of its proper divisors (6312709440).

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

2126105280 is a wasteful number, since it uses less digits than its factorization.

2126105280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885 (or 869 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 2126105280 is about 46109.7091727979. The cubic root of 2126105280 is about 1285.8636575662.

The spelling of 2126105280 in words is "two billion, one hundred twenty-six million, one hundred five thousand, two hundred eighty".