4243039 has 2 divisors, whose sum is σ = 4243040. Its totient is φ = 4243038.

The previous prime is 4243009. The next prime is 4243051. The reversal of 4243039 is 9303424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4243039 - 2¹¹ = 4240991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4243009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2121519 + 2121520.

It is an arithmetic number, because the mean of its divisors is an integer number (2121520).

Almost surely, 2^4243039 is an apocalyptic number.

4243039 is a deficient number, since it is larger than the sum of its proper divisors (1).

4243039 is an equidigital number, since it uses as much as digits as its factorization.

4243039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 4243039 is about 2059.8638304509. The cubic root of 4243039 is about 161.8921066878.

The spelling of 4243039 in words is "four million, two hundred forty-three thousand, thirty-nine".