2143420043 has 2 divisors, whose sum is σ = 2143420044. Its totient is φ = 2143420042.

The previous prime is 2143420031. The next prime is 2143420057. The reversal of 2143420043 is 3400243412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2143420043 - 2⁸ = 2143419787 is a prime.

It is not a weakly prime, because it can be changed into another prime (2143420063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071710021 + 1071710022.

It is an arithmetic number, because the mean of its divisors is an integer number (1071710022).

Almost surely, 2^2143420043 is an apocalyptic number.

2143420043 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143420043 is an equidigital number, since it uses as much as digits as its factorization.

2143420043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 2143420043 is about 46297.0846058367. The cubic root of 2143420043 is about 1289.3448675526.

Adding to 2143420043 its reverse (3400243412), we get a palindrome (5543663455).

The spelling of 2143420043 in words is "two billion, one hundred forty-three million, four hundred twenty thousand, forty-three".