211420043 has 2 divisors, whose sum is σ = 211420044. Its totient is φ = 211420042.

The previous prime is 211420009. The next prime is 211420051. The reversal of 211420043 is 340024112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211420043 - 2⁸ = 211419787 is a prime.

It is not a weakly prime, because it can be changed into another prime (211420003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105710021 + 105710022.

It is an arithmetic number, because the mean of its divisors is an integer number (105710022).

Almost surely, 2^211420043 is an apocalyptic number.

211420043 is a deficient number, since it is larger than the sum of its proper divisors (1).

211420043 is an equidigital number, since it uses as much as digits as its factorization.

211420043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 211420043 is about 14540.2903341027. The cubic root of 211420043 is about 595.7289683617.

Adding to 211420043 its reverse (340024112), we get a palindrome (551444155).

The spelling of 211420043 in words is "two hundred eleven million, four hundred twenty thousand, forty-three".