4200021289 has 2 divisors, whose sum is σ = 4200021290. Its totient is φ = 4200021288.

The previous prime is 4200021281. The next prime is 4200021313. The reversal of 4200021289 is 9821200024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4165411600 + 34609689 = 64540^2 + 5883^2 .

It is a cyclic number.

It is not a de Polignac number, because 4200021289 - 2³ = 4200021281 is a prime.

It is not a weakly prime, because it can be changed into another prime (4200021281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2100010644 + 2100010645.

It is an arithmetic number, because the mean of its divisors is an integer number (2100010645).

Almost surely, 2^4200021289 is an apocalyptic number.

It is an amenable number.

4200021289 is a deficient number, since it is larger than the sum of its proper divisors (1).

4200021289 is an equidigital number, since it uses as much as digits as its factorization.

4200021289 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 28.

The square root of 4200021289 is about 64807.5712320713. The cubic root of 4200021289 is about 1613.4313720741.

The spelling of 4200021289 in words is "four billion, two hundred million, twenty-one thousand, two hundred eighty-nine".