4242444155 has 8 divisors (see below), whose sum is σ = 5152270032. Its totient is φ = 3353063968.

The previous prime is 4242444149. The next prime is 4242444169. The reversal of 4242444155 is 5514442424.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4242444155 - 2⁶ = 4242444091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5110964 + ... + 5111793.

It is an arithmetic number, because the mean of its divisors is an integer number (644033754).

Almost surely, 2^4242444155 is an apocalyptic number.

4242444155 is a deficient number, since it is larger than the sum of its proper divisors (909825877).

4242444155 is a wasteful number, since it uses less digits than its factorization.

4242444155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10222845.

The product of its digits is 102400, while the sum is 35.

The square root of 4242444155 is about 65134.0475864966. The cubic root of 4242444155 is about 1618.8454094617.

Adding to 4242444155 its reverse (5514442424), we get a palindrome (9756886579).

The spelling of 4242444155 in words is "four billion, two hundred forty-two million, four hundred forty-four thousand, one hundred fifty-five".