42315305 has 4 divisors (see below), whose sum is σ = 50778372. Its totient is φ = 33852240.

The previous prime is 42315293. The next prime is 42315313. The reversal of 42315305 is 50351324.

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 32228329 + 10086976 = 5677^2 + 3176^2 .

It is not a de Polignac number, because 42315305 - 2⁶ = 42315241 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, 4231526 + ... + 4231535.

It is an arithmetic number, because the mean of its divisors is an integer number (12694593).

Almost surely, 2^42315305 is an apocalyptic number.

It is an amenable number.

42315305 is a deficient number, since it is larger than the sum of its proper divisors (8463067).

42315305 is an equidigital number, since it uses as much as digits as its factorization.

42315305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8463066.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 42315305 is about 6505.0215218706. The cubic root of 42315305 is about 348.4703448765.

Adding to 42315305 its reverse (50351324), we get a palindrome (92666629).

The spelling of 42315305 in words is "forty-two million, three hundred fifteen thousand, three hundred five".