4211420209 has 2 divisors, whose sum is σ = 4211420210. Its totient is φ = 4211420208.

The previous prime is 4211420201. The next prime is 4211420231. The reversal of 4211420209 is 9020241124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3940323984 + 271096225 = 62772^2 + 16465^2 .

It is a cyclic number.

It is not a de Polignac number, because 4211420209 - 2³ = 4211420201 is a prime.

It is not a weakly prime, because it can be changed into another prime (4211420201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2105710104 + 2105710105.

It is an arithmetic number, because the mean of its divisors is an integer number (2105710105).

Almost surely, 2^4211420209 is an apocalyptic number.

It is an amenable number.

4211420209 is a deficient number, since it is larger than the sum of its proper divisors (1).

4211420209 is an equidigital number, since it uses as much as digits as its factorization.

4211420209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 4211420209 is about 64895.4559965488. The cubic root of 4211420209 is about 1614.8896791284.

The spelling of 4211420209 in words is "four billion, two hundred eleven million, four hundred twenty thousand, two hundred nine".