42561106223 has 2 divisors, whose sum is σ = 42561106224. Its totient is φ = 42561106222.

The previous prime is 42561106219. The next prime is 42561106261. The reversal of 42561106223 is 32260116524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42561106223 - 2² = 42561106219 is a prime.

It is a super-2 number, since 2×42561106223² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42561106223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42561103223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21280553111 + 21280553112.

It is an arithmetic number, because the mean of its divisors is an integer number (21280553112).

Almost surely, 2^42561106223 is an apocalyptic number.

42561106223 is a deficient number, since it is larger than the sum of its proper divisors (1).

42561106223 is an equidigital number, since it uses as much as digits as its factorization.

42561106223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 42561106223 in words is "forty-two billion, five hundred sixty-one million, one hundred six thousand, two hundred twenty-three".