42318641 has 4 divisors (see below), whose sum is σ = 42854400. Its totient is φ = 41782884.

The previous prime is 42318631. The next prime is 42318649. The reversal of 42318641 is 14681324.

42318641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42318641 - 2¹⁴ = 42302257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42318649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267761 + ... + 267918.

It is an arithmetic number, because the mean of its divisors is an integer number (10713600).

Almost surely, 2^42318641 is an apocalyptic number.

It is an amenable number.

42318641 is a deficient number, since it is larger than the sum of its proper divisors (535759).

42318641 is an equidigital number, since it uses as much as digits as its factorization.

42318641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535758.

The product of its digits is 4608, while the sum is 29.

The square root of 42318641 is about 6505.2779341086. The cubic root of 42318641 is about 348.4795020560.

Adding to 42318641 its reverse (14681324), we get a palindrome (56999965).

The spelling of 42318641 in words is "forty-two million, three hundred eighteen thousand, six hundred forty-one".