2121300423 has 24 divisors (see below), whose sum is σ = 3368192256. Its totient is φ = 1275814800.

The previous prime is 2121300421. The next prime is 2121300427. The reversal of 2121300423 is 3240031212.

2121300423 is a `hidden beast` number, since 212 + 1 + 30 + 0 + 423 = 666.

It is not a de Polignac number, because 2121300423 - 2¹ = 2121300421 is a prime.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 2121300396 and 2121300405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121300421) by changing a digit.

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, 68815 + ... + 94752.

It is an arithmetic number, because the mean of its divisors is an integer number (140341344).

Almost surely, 2^2121300423 is an apocalyptic number.

2121300423 is a deficient number, since it is larger than the sum of its proper divisors (1246891833).

2121300423 is a wasteful number, since it uses less digits than its factorization.

2121300423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163715 (or 163712 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2121300423 is about 46057.5772593392. The cubic root of 2121300423 is about 1284.8942714062.

Adding to 2121300423 its reverse (3240031212), we get a palindrome (5361331635).

The spelling of 2121300423 in words is "two billion, one hundred twenty-one million, three hundred thousand, four hundred twenty-three".