2123704530 has 24 divisors (see below), whose sum is σ = 5521632012. Its totient is φ = 566321184.

The previous prime is 2123704529. The next prime is 2123704543. The reversal of 2123704530 is 354073212.

2123704530 is a `hidden beast` number, since 2 + 123 + 7 + 0 + 4 + 530 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1973225241 + 150479289 = 44421^2 + 12267^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2123704494 and 2123704503.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11798269 + ... + 11798448.

Almost surely, 2^2123704530 is an apocalyptic number.

2123704530 is an abundant number, since it is smaller than the sum of its proper divisors (3397927482).

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

2123704530 is a wasteful number, since it uses less digits than its factorization.

2123704530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23596730 (or 23596727 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 2123704530 is about 46083.6687992612. The cubic root of 2123704530 is about 1285.3794858945.

Adding to 2123704530 its reverse (354073212), we get a palindrome (2477777742).

The spelling of 2123704530 in words is "two billion, one hundred twenty-three million, seven hundred four thousand, five hundred thirty".