42531605113 has 4 divisors (see below), whose sum is σ = 42537884068. Its totient is φ = 42525326160.

The previous prime is 42531605107. The next prime is 42531605119. The reversal of 42531605113 is 31150613524.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (42531605107) and next prime (42531605119).

It can be written as a sum of positive squares in 2 ways, for example, as 26689103424 + 15842501689 = 163368^2 + 125867^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42531605113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42531605119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3129306 + ... + 3142867.

It is an arithmetic number, because the mean of its divisors is an integer number (10634471017).

Almost surely, 2^42531605113 is an apocalyptic number.

It is an amenable number.

42531605113 is a deficient number, since it is larger than the sum of its proper divisors (6278955).

42531605113 is an equidigital number, since it uses as much as digits as its factorization.

42531605113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6278954.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 42531605113 in words is "forty-two billion, five hundred thirty-one million, six hundred five thousand, one hundred thirteen".