4042306561 has 4 divisors (see below), whose sum is σ = 4061464624. Its totient is φ = 4023148500.

The previous prime is 4042306553. The next prime is 4042306637. The reversal of 4042306561 is 1656032404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4042306561 - 2³ = 4042306553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4042306531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9578715 + ... + 9579136.

It is an arithmetic number, because the mean of its divisors is an integer number (1015366156).

Almost surely, 2^4042306561 is an apocalyptic number.

It is an amenable number.

4042306561 is a deficient number, since it is larger than the sum of its proper divisors (19158063).

4042306561 is a wasteful number, since it uses less digits than its factorization.

4042306561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19158062.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 4042306561 is about 63579.1362083506. The cubic root of 4042306561 is about 1592.9778931424.

Adding to 4042306561 its reverse (1656032404), we get a palindrome (5698338965).

The spelling of 4042306561 in words is "four billion, forty-two million, three hundred six thousand, five hundred sixty-one".