4242642578 has 32 divisors (see below), whose sum is σ = 6640109568. Its totient is φ = 2030860800.

The previous prime is 4242642533. The next prime is 4242642589. The reversal of 4242642578 is 8752462424.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3116618 + ... + 3117978.

It is an arithmetic number, because the mean of its divisors is an integer number (207503424).

Almost surely, 2^4242642578 is an apocalyptic number.

4242642578 is a deficient number, since it is larger than the sum of its proper divisors (2397466990).

4242642578 is a wasteful number, since it uses less digits than its factorization.

4242642578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898.

The product of its digits is 860160, while the sum is 44.

The square root of 4242642578 is about 65135.5707582270. The cubic root of 4242642578 is about 1618.8706473625.

The spelling of 4242642578 in words is "four billion, two hundred forty-two million, six hundred forty-two thousand, five hundred seventy-eight".