42201043505 has 4 divisors (see below), whose sum is σ = 50641252212. Its totient is φ = 33760834800.

The previous prime is 42201043501. The next prime is 42201043519. The reversal of 42201043505 is 50534010224.

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 12821712289 + 29379331216 = 113233^2 + 171404^2 .

It is not a de Polignac number, because 42201043505 - 2² = 42201043501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42201043501) 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, 4220104346 + ... + 4220104355.

It is an arithmetic number, because the mean of its divisors is an integer number (12660313053).

Almost surely, 2^42201043505 is an apocalyptic number.

It is an amenable number.

42201043505 is a deficient number, since it is larger than the sum of its proper divisors (8440208707).

42201043505 is an equidigital number, since it uses as much as digits as its factorization.

42201043505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8440208706.

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

Adding to 42201043505 its reverse (50534010224), we get a palindrome (92735053729).

The spelling of 42201043505 in words is "forty-two billion, two hundred one million, forty-three thousand, five hundred five".