4242439843 has 2 divisors, whose sum is σ = 4242439844. Its totient is φ = 4242439842.

The previous prime is 4242439829. The next prime is 4242439849. The reversal of 4242439843 is 3489342424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4242439843 - 2²⁵ = 4208885411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4242439843.

It is not a weakly prime, because it can be changed into another prime (4242439849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2121219921 + 2121219922.

It is an arithmetic number, because the mean of its divisors is an integer number (2121219922).

Almost surely, 2^4242439843 is an apocalyptic number.

4242439843 is a deficient number, since it is larger than the sum of its proper divisors (1).

4242439843 is an equidigital number, since it uses as much as digits as its factorization.

4242439843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 663552, while the sum is 43.

The square root of 4242439843 is about 65134.0144855205. The cubic root of 4242439843 is about 1618.8448609992.

The spelling of 4242439843 in words is "four billion, two hundred forty-two million, four hundred thirty-nine thousand, eight hundred forty-three".