2121300442 has 16 divisors (see below), whose sum is σ = 3337513920. Its totient is φ = 1009274112.

The previous prime is 2121300427. The next prime is 2121300451. The reversal of 2121300442 is 2440031212.

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 7 ways as a sum of consecutive naturals, for example, 110592 + ... + 128347.

It is an arithmetic number, because the mean of its divisors is an integer number (208594620).

Almost surely, 2^2121300442 is an apocalyptic number.

2121300442 is a deficient number, since it is larger than the sum of its proper divisors (1216213478).

2121300442 is a wasteful number, since it uses less digits than its factorization.

2121300442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239157.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2121300442 is about 46057.5774656028. The cubic root of 2121300442 is about 1284.8942752423.

Adding to 2121300442 its reverse (2440031212), we get a palindrome (4561331654).

The spelling of 2121300442 in words is "two billion, one hundred twenty-one million, three hundred thousand, four hundred forty-two".