4242444091 has 2 divisors, whose sum is σ = 4242444092. Its totient is φ = 4242444090.

The previous prime is 4242444067. The next prime is 4242444103. The reversal of 4242444091 is 1904442424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4242444091 - 2³¹ = 2094960443 is a prime.

It is not a weakly prime, because it can be changed into another prime (4242424091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2121222045 + 2121222046.

It is an arithmetic number, because the mean of its divisors is an integer number (2121222046).

Almost surely, 2^4242444091 is an apocalyptic number.

4242444091 is a deficient number, since it is larger than the sum of its proper divisors (1).

4242444091 is an equidigital number, since it uses as much as digits as its factorization.

4242444091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 4242444091 is about 65134.0470952021. The cubic root of 4242444091 is about 1618.8454013212.

The spelling of 4242444091 in words is "four billion, two hundred forty-two million, four hundred forty-four thousand, ninety-one".