4042656562405 has 8 divisors (see below), whose sum is σ = 4852507230072. Its totient is φ = 3233245679808.

The previous prime is 4042656562403. The next prime is 4042656562409. The reversal of 4042656562405 is 5042656562404.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 948438358884 + 3094218203521 = 973878^2 + 1759039^2 .

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 4042656562405 - 2¹ = 4042656562403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4042656562403) by changing a digit.

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, 109926042 + ... + 109962811.

It is an arithmetic number, because the mean of its divisors is an integer number (606563403759).

Almost surely, 2^{4042656562405} is an apocalyptic number.

It is an amenable number.

4042656562405 is a deficient number, since it is larger than the sum of its proper divisors (809850667667).

4042656562405 is a wasteful number, since it uses less digits than its factorization.

4042656562405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219892535.

The product of its (nonzero) digits is 6912000, while the sum is 49.

Subtracting 4042656562405 from its reverse (5042656562404), we obtain a palindrome (999999999999).

The spelling of 4042656562405 in words is "four trillion, forty-two billion, six hundred fifty-six million, five hundred sixty-two thousand, four hundred five".