42318653 has 4 divisors (see below), whose sum is σ = 45573948. Its totient is φ = 39063360.

The previous prime is 42318649. The next prime is 42318667. The reversal of 42318653 is 35681324.

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 10936249 + 31382404 = 3307^2 + 5602^2 .

It is a cyclic number.

It is not a de Polignac number, because 42318653 - 2² = 42318649 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42318623) 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, 1627628 + ... + 1627653.

It is an arithmetic number, because the mean of its divisors is an integer number (11393487).

Almost surely, 2^42318653 is an apocalyptic number.

It is an amenable number.

42318653 is a deficient number, since it is larger than the sum of its proper divisors (3255295).

42318653 is a wasteful number, since it uses less digits than its factorization.

42318653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3255294.

The product of its digits is 17280, while the sum is 32.

The square root of 42318653 is about 6505.2788564365. The cubic root of 42318653 is about 348.4795349946.

Adding to 42318653 its reverse (35681324), we get a palindrome (77999977).

The spelling of 42318653 in words is "forty-two million, three hundred eighteen thousand, six hundred fifty-three".