2124245205 has 24 divisors (see below), whose sum is σ = 3684327192. Its totient is φ = 1132222464.

The previous prime is 2124245197. The next prime is 2124245309. The reversal of 2124245205 is 5025424212.

2124245205 is a `hidden beast` number, since 212 + 4 + 245 + 205 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 774564561 + 1349680644 = 27831^2 + 36738^2 .

It is not a de Polignac number, because 2124245205 - 2³ = 2124245197 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 62457 + ... + 90273.

It is an arithmetic number, because the mean of its divisors is an integer number (153513633).

Almost surely, 2^2124245205 is an apocalyptic number.

It is an amenable number.

2124245205 is a deficient number, since it is larger than the sum of its proper divisors (1560081987).

2124245205 is a wasteful number, since it uses less digits than its factorization.

2124245205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29525 (or 29522 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 2124245205 is about 46089.5346580978. The cubic root of 2124245205 is about 1285.4885584411.

Adding to 2124245205 its reverse (5025424212), we get a palindrome (7149669417).

The spelling of 2124245205 in words is "two billion, one hundred twenty-four million, two hundred forty-five thousand, two hundred five".