42818858 has 4 divisors (see below), whose sum is σ = 64228290. Its totient is φ = 21409428.

The previous prime is 42818857. The next prime is 42818861. The reversal of 42818858 is 85881824.

It is a happy number.

42818858 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.

It can be written as a sum of positive squares in only one way, i.e., 35129329 + 7689529 = 5927^2 + 2773^2 .

It is not an unprimeable number, because it can be changed into a prime (42818857) 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 as a sum of consecutive naturals, namely, 10704713 + ... + 10704716.

Almost surely, 2^42818858 is an apocalyptic number.

42818858 is a deficient number, since it is larger than the sum of its proper divisors (21409432).

42818858 is a wasteful number, since it uses less digits than its factorization.

42818858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21409431.

The product of its digits is 163840, while the sum is 44.

The square root of 42818858 is about 6543.6119995000. The cubic root of 42818858 is about 349.8471659249.

The spelling of 42818858 in words is "forty-two million, eight hundred eighteen thousand, eight hundred fifty-eight".