4242056645 has 8 divisors (see below), whose sum is σ = 5160200856. Its totient is φ = 3347156736.

The previous prime is 4242056639. The next prime is 4242056653. The reversal of 4242056645 is 5466502424.

It can be written as a sum of positive squares in 4 ways, for example, as 131836324 + 4110220321 = 11482^2 + 64111^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4242056645 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4242056599 and 4242056608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5810672 + ... + 5811401.

It is an arithmetic number, because the mean of its divisors is an integer number (645025107).

Almost surely, 2^4242056645 is an apocalyptic number.

It is an amenable number.

4242056645 is a deficient number, since it is larger than the sum of its proper divisors (918144211).

4242056645 is a wasteful number, since it uses less digits than its factorization.

4242056645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11622151.

The product of its (nonzero) digits is 230400, while the sum is 38.

The square root of 4242056645 is about 65131.0728070711. The cubic root of 4242056645 is about 1618.7961188592.

The spelling of 4242056645 in words is "four billion, two hundred forty-two million, fifty-six thousand, six hundred forty-five".