42130440240505 has 4 divisors (see below), whose sum is σ = 50556528288612. Its totient is φ = 33704352192400.

The previous prime is 42130440240491. The next prime is 42130440240529. The reversal of 42130440240505 is 50504204403124.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5834490489961 + 36295949750544 = 2415469^2 + 6024612^2 .

It is not a de Polignac number, because 42130440240505 - 2²³ = 42130431851897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4213044024046 + ... + 4213044024055.

It is an arithmetic number, because the mean of its divisors is an integer number (12639132072153).

Almost surely, 2^{42130440240505} is an apocalyptic number.

It is an amenable number.

42130440240505 is a deficient number, since it is larger than the sum of its proper divisors (8426088048107).

42130440240505 is an equidigital number, since it uses as much as digits as its factorization.

42130440240505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8426088048106.

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 42130440240505 its reverse (50504204403124), we get a palindrome (92634644643629).

The spelling of 42130440240505 in words is "forty-two trillion, one hundred thirty billion, four hundred forty million, two hundred forty thousand, five hundred five".