42518318 has 4 divisors (see below), whose sum is σ = 63777480. Its totient is φ = 21259158.

The previous prime is 42518317. The next prime is 42518347. The reversal of 42518318 is 81381524.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42518317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10629578 + ... + 10629581.

It is an arithmetic number, because the mean of its divisors is an integer number (15944370).

Almost surely, 2^42518318 is an apocalyptic number.

42518318 is a deficient number, since it is larger than the sum of its proper divisors (21259162).

42518318 is a wasteful number, since it uses less digits than its factorization.

42518318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21259161.

The product of its digits is 7680, while the sum is 32.

The square root of 42518318 is about 6520.6071803169. The cubic root of 42518318 is about 349.0267328176.

The spelling of 42518318 in words is "forty-two million, five hundred eighteen thousand, three hundred eighteen".