4242444661 has 16 divisors (see below), whose sum is σ = 5243906304. Its totient is φ = 3342236544.

The previous prime is 4242444631. The next prime is 4242444683. The reversal of 4242444661 is 1664442424.

4242444661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 4242444661 - 2⁷ = 4242444533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4242444661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4242444631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78841 + ... + 121246.

It is an arithmetic number, because the mean of its divisors is an integer number (327744144).

Almost surely, 2^4242444661 is an apocalyptic number.

It is an amenable number.

4242444661 is a deficient number, since it is larger than the sum of its proper divisors (1001461643).

4242444661 is a wasteful number, since it uses less digits than its factorization.

4242444661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200340.

The product of its digits is 147456, while the sum is 37.

The square root of 4242444661 is about 65134.0514707937. The cubic root of 4242444661 is about 1618.8454738220.

The spelling of 4242444661 in words is "four billion, two hundred forty-two million, four hundred forty-four thousand, six hundred sixty-one".