4242444149 has 2 divisors, whose sum is σ = 4242444150. Its totient is φ = 4242444148.

The previous prime is 4242444131. The next prime is 4242444169. The reversal of 4242444149 is 9414442424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2916756049 + 1325688100 = 54007^2 + 36410^2 .

It is a cyclic number.

It is not a de Polignac number, because 4242444149 - 2⁸ = 4242443893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4242444169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2121222074 + 2121222075.

It is an arithmetic number, because the mean of its divisors is an integer number (2121222075).

Almost surely, 2^4242444149 is an apocalyptic number.

It is an amenable number.

4242444149 is a deficient number, since it is larger than the sum of its proper divisors (1).

4242444149 is an equidigital number, since it uses as much as digits as its factorization.

4242444149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 147456, while the sum is 38.

The square root of 4242444149 is about 65134.0475404377. The cubic root of 4242444149 is about 1618.8454086985.

The spelling of 4242444149 in words is "four billion, two hundred forty-two million, four hundred forty-four thousand, one hundred forty-nine".