2123505244 has 24 divisors (see below), whose sum is σ = 4255382880. Its totient is φ = 908279616.

The previous prime is 2123505233. The next prime is 2123505269. The reversal of 2123505244 is 4425053212.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 60247 + ... + 88750.

It is an arithmetic number, because the mean of its divisors is an integer number (177307620).

Almost surely, 2^2123505244 is an apocalyptic number.

It is an amenable number.

2123505244 is an abundant number, since it is smaller than the sum of its proper divisors (2131877636).

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

2123505244 is a wasteful number, since it uses less digits than its factorization.

2123505244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149517 (or 149515 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 2123505244 is about 46081.5065291924. The cubic root of 2123505244 is about 1285.3392784574.

Adding to 2123505244 its reverse (4425053212), we get a palindrome (6548558456).

The spelling of 2123505244 in words is "two billion, one hundred twenty-three million, five hundred five thousand, two hundred forty-four".