2120434343 has 2 divisors, whose sum is σ = 2120434344. Its totient is φ = 2120434342.

The previous prime is 2120434321. The next prime is 2120434373. The reversal of 2120434343 is 3434340212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2120434343 - 2¹⁸ = 2120172199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120434373) by changing a digit.

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 as a sum of consecutive naturals, namely, 1060217171 + 1060217172.

It is an arithmetic number, because the mean of its divisors is an integer number (1060217172).

Almost surely, 2^2120434343 is an apocalyptic number.

2120434343 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120434343 is an equidigital number, since it uses as much as digits as its factorization.

2120434343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 2120434343 is about 46048.1741549000. The cubic root of 2120434343 is about 1284.7193829746.

Adding to 2120434343 its reverse (3434340212), we get a palindrome (5554774555).

The spelling of 2120434343 in words is "two billion, one hundred twenty million, four hundred thirty-four thousand, three hundred forty-three".