20100342043 has 2 divisors, whose sum is σ = 20100342044. Its totient is φ = 20100342042.

The previous prime is 20100342007. The next prime is 20100342103. The reversal of 20100342043 is 34024300102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20100342043 - 2¹⁷ = 20100210971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20100342043.

It is not a weakly prime, because it can be changed into another prime (20100342443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050171021 + 10050171022.

It is an arithmetic number, because the mean of its divisors is an integer number (10050171022).

Almost surely, 2^20100342043 is an apocalyptic number.

20100342043 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100342043 is an equidigital number, since it uses as much as digits as its factorization.

20100342043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20100342043 its reverse (34024300102), we get a palindrome (54124642145).

The spelling of 20100342043 in words is "twenty billion, one hundred million, three hundred forty-two thousand, forty-three".