42521034005 has 4 divisors (see below), whose sum is σ = 51025240812. Its totient is φ = 34016827200.

The previous prime is 42521034001. The next prime is 42521034043. The reversal of 42521034005 is 50043012524.

It is a happy number.

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 15674539204 + 26846494801 = 125198^2 + 163849^2 .

It is not a de Polignac number, because 42521034005 - 2² = 42521034001 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 (42521034001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4252103396 + ... + 4252103405.

It is an arithmetic number, because the mean of its divisors is an integer number (12756310203).

Almost surely, 2^42521034005 is an apocalyptic number.

It is an amenable number.

42521034005 is a deficient number, since it is larger than the sum of its proper divisors (8504206807).

42521034005 is an equidigital number, since it uses as much as digits as its factorization.

42521034005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8504206806.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 42521034005 its reverse (50043012524), we get a palindrome (92564046529).

The spelling of 42521034005 in words is "forty-two billion, five hundred twenty-one million, thirty-four thousand, five".