2105424505 has 16 divisors (see below), whose sum is σ = 2684275920. Its totient is φ = 1582301952.

The previous prime is 2105424481. The next prime is 2105424509. The reversal of 2105424505 is 5054245012.

It can be written as a sum of positive squares in 8 ways, for example, as 117245584 + 1988178921 = 10828^2 + 44589^2 .

It is a cyclic number.

It is not a de Polignac number, because 2105424505 - 2⁵ = 2105424473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2105424509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190854 + ... + 201583.

It is an arithmetic number, because the mean of its divisors is an integer number (167767245).

Almost surely, 2^2105424505 is an apocalyptic number.

It is an amenable number.

2105424505 is a deficient number, since it is larger than the sum of its proper divisors (578851415).

2105424505 is a wasteful number, since it uses less digits than its factorization.

2105424505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392508.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 2105424505 is about 45884.9049797425. The cubic root of 2105424505 is about 1281.6808372863.

Adding to 2105424505 its reverse (5054245012), we get a palindrome (7159669517).

The spelling of 2105424505 in words is "two billion, one hundred five million, four hundred twenty-four thousand, five hundred five".