42218158 has 8 divisors (see below), whose sum is σ = 64400760. Its totient is φ = 20751240.

The previous prime is 42218149. The next prime is 42218159. The reversal of 42218158 is 85181224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42218159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178773 + ... + 179008.

It is an arithmetic number, because the mean of its divisors is an integer number (8050095).

Almost surely, 2^42218158 is an apocalyptic number.

42218158 is a deficient number, since it is larger than the sum of its proper divisors (22182602).

42218158 is a wasteful number, since it uses less digits than its factorization.

42218158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357842.

The product of its digits is 5120, while the sum is 31.

The square root of 42218158 is about 6497.5501537118. The cubic root of 42218158 is about 348.2034691128.

The spelling of 42218158 in words is "forty-two million, two hundred eighteen thousand, one hundred fifty-eight".