42205020305 has 12 divisors (see below), whose sum is σ = 58914763380. Its totient is φ = 28940585184.

The previous prime is 42205020281. The next prime is 42205020331. The reversal of 42205020305 is 50302050224.

It can be written as a sum of positive squares in 2 ways, for example, as 5019297409 + 37185722896 = 70847^2 + 192836^2 .

It is not a de Polignac number, because 42205020305 - 2¹² = 42205016209 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86132450 + ... + 86132939.

It is an arithmetic number, because the mean of its divisors is an integer number (4909563615).

Almost surely, 2^42205020305 is an apocalyptic number.

It is an amenable number.

42205020305 is a deficient number, since it is larger than the sum of its proper divisors (16709743075).

42205020305 is a wasteful number, since it uses less digits than its factorization.

42205020305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172265408 (or 172265401 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

Adding to 42205020305 its reverse (50302050224), we get a palindrome (92507070529).

The spelling of 42205020305 in words is "forty-two billion, two hundred five million, twenty thousand, three hundred five".