4243420801 has 2 divisors, whose sum is σ = 4243420802. Its totient is φ = 4243420800.

The previous prime is 4243420793. The next prime is 4243420837. The reversal of 4243420801 is 1080243424.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2301696576 + 1941724225 = 47976^2 + 44065^2 .

It is a cyclic number.

It is not a de Polignac number, because 4243420801 - 2³ = 4243420793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4243420801.

It is not a weakly prime, because it can be changed into another prime (4243420871) 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, 2121710400 + 2121710401.

It is an arithmetic number, because the mean of its divisors is an integer number (2121710401).

Almost surely, 2^4243420801 is an apocalyptic number.

It is an amenable number.

4243420801 is a deficient number, since it is larger than the sum of its proper divisors (1).

4243420801 is an equidigital number, since it uses as much as digits as its factorization.

4243420801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 4243420801 is about 65141.5443553498. The cubic root of 4243420801 is about 1618.9696238319.

The spelling of 4243420801 in words is "four billion, two hundred forty-three million, four hundred twenty thousand, eight hundred one".