42918345 has 24 divisors (see below), whose sum is σ = 77628096. Its totient is φ = 21894048.

The previous prime is 42918331. The next prime is 42918377. The reversal of 42918345 is 54381924.

42918345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42918345 - 2¹¹ = 42916297 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 19699 + ... + 21768.

It is an arithmetic number, because the mean of its divisors is an integer number (3234504).

Almost surely, 2^42918345 is an apocalyptic number.

42918345 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42918345 is a deficient number, since it is larger than the sum of its proper divisors (34709751).

42918345 is a wasteful number, since it uses less digits than its factorization.

42918345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41501 (or 41498 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 42918345 is about 6551.2094303266. The cubic root of 42918345 is about 350.1179058544.

The spelling of 42918345 in words is "forty-two million, nine hundred eighteen thousand, three hundred forty-five".