84122018 has 32 divisors (see below), whose sum is σ = 137941056. Its totient is φ = 38320128.

The previous prime is 84121993. The next prime is 84122021. The reversal of 84122018 is 81022148.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 238130 + ... + 238482.

It is an arithmetic number, because the mean of its divisors is an integer number (4310658).

Almost surely, 2^84122018 is an apocalyptic number.

84122018 is a deficient number, since it is larger than the sum of its proper divisors (53819038).

84122018 is a wasteful number, since it uses less digits than its factorization.

84122018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 84122018 is about 9171.8056019521. The cubic root of 84122018 is about 438.1638670162.

The spelling of 84122018 in words is "eighty-four million, one hundred twenty-two thousand, eighteen".