42308617 has 4 divisors (see below), whose sum is σ = 45563140. Its totient is φ = 39054096.

The previous prime is 42308561. The next prime is 42308621. The reversal of 42308617 is 71680324.

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 18844281 + 23464336 = 4341^2 + 4844^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42308617 is a prime.

It is a super-3 number, since 3×42308617³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42308657) 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, 1627242 + ... + 1627267.

It is an arithmetic number, because the mean of its divisors is an integer number (11390785).

Almost surely, 2^42308617 is an apocalyptic number.

It is an amenable number.

42308617 is a deficient number, since it is larger than the sum of its proper divisors (3254523).

42308617 is a wasteful number, since it uses less digits than its factorization.

42308617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3254522.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 42308617 is about 6504.5074371546. The cubic root of 42308617 is about 348.4519851486.

The spelling of 42308617 in words is "forty-two million, three hundred eight thousand, six hundred seventeen".