42318530 has 8 divisors (see below), whose sum is σ = 76173372. Its totient is φ = 16927408.

The previous prime is 42318527. The next prime is 42318553. The reversal of 42318530 is 3581324.

It can be written as a sum of positive squares in 2 ways, for example, as 41692849 + 625681 = 6457^2 + 791^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 42318530.

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, 2115917 + ... + 2115936.

Almost surely, 2^42318530 is an apocalyptic number.

42318530 is a deficient number, since it is larger than the sum of its proper divisors (33854842).

42318530 is a wasteful number, since it uses less digits than its factorization.

42318530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4231860.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 42318530 is about 6505.2694025690. The cubic root of 42318530 is about 348.4791973734.

Adding to 42318530 its reverse (3581324), we get a palindrome (45899854).

The spelling of 42318530 in words is "forty-two million, three hundred eighteen thousand, five hundred thirty".