42308505 has 12 divisors (see below), whose sum is σ = 73334820. Its totient is φ = 22564512.

The previous prime is 42308491. The next prime is 42308527. The reversal of 42308505 is 50580324.

It can be written as a sum of positive squares in 2 ways, for example, as 10634121 + 31674384 = 3261^2 + 5628^2 .

It is not a de Polignac number, because 42308505 - 2⁵ = 42308473 is a prime.

It is a nialpdrome in base 9.

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, 470050 + ... + 470139.

It is an arithmetic number, because the mean of its divisors is an integer number (6111235).

Almost surely, 2^42308505 is an apocalyptic number.

42308505 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42308505 is a deficient number, since it is larger than the sum of its proper divisors (31026315).

42308505 is a wasteful number, since it uses less digits than its factorization.

42308505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940200 (or 940197 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 42308505 is about 6504.4988277345. The cubic root of 42308505 is about 348.4516776726.

Adding to 42308505 its reverse (50580324), we get a palindrome (92888829).

The spelling of 42308505 in words is "forty-two million, three hundred eight thousand, five hundred five".