2123453430 has 96 divisors (see below), whose sum is σ = 6347787264. Its totient is φ = 482430528.

The previous prime is 2123453429. The next prime is 2123453441. The reversal of 2123453430 is 343543212.

2123453430 is a `hidden beast` number, since 2 + 123 + 4 + 534 + 3 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2123453394 and 2123453403.

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 47 ways as a sum of consecutive naturals, for example, 95119 + ... + 115301.

It is an arithmetic number, because the mean of its divisors is an integer number (66122784).

Almost surely, 2^2123453430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2123453430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3173893632).

2123453430 is an abundant number, since it is smaller than the sum of its proper divisors (4224333834).

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

2123453430 is a wasteful number, since it uses less digits than its factorization.

2123453430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20370 (or 20367 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 2123453430 is about 46080.9443262614. The cubic root of 2123453430 is about 1285.3288241843.

Adding to 2123453430 its reverse (343543212), we get a palindrome (2466996642).

The spelling of 2123453430 in words is "two billion, one hundred twenty-three million, four hundred fifty-three thousand, four hundred thirty".