2105444140 has 12 divisors (see below), whose sum is σ = 4421432736. Its totient is φ = 842177648.

The previous prime is 2105444119. The next prime is 2105444147. The reversal of 2105444140 is 414445012.

It is not an unprimeable number, because it can be changed into a prime (2105444147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52636084 + ... + 52636123.

It is an arithmetic number, because the mean of its divisors is an integer number (368452728).

Almost surely, 2^2105444140 is an apocalyptic number.

2105444140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2105444140 is an abundant number, since it is smaller than the sum of its proper divisors (2315988596).

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

2105444140 is a wasteful number, since it uses less digits than its factorization.

2105444140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105272216 (or 105272214 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 2105444140 is about 45885.1189384968. The cubic root of 2105444140 is about 1281.6848215541.

Adding to 2105444140 its reverse (414445012), we get a palindrome (2519889152).

The spelling of 2105444140 in words is "two billion, one hundred five million, four hundred forty-four thousand, one hundred forty".