421086018 has 16 divisors (see below), whose sum is σ = 886497120. Its totient is φ = 132974496.

The previous prime is 421086013. The next prime is 421086059. The reversal of 421086018 is 810680124.

It is not an unprimeable number, because it can be changed into a prime (421086013) 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 7 ways as a sum of consecutive naturals, for example, 1846755 + ... + 1846982.

It is an arithmetic number, because the mean of its divisors is an integer number (55406070).

Almost surely, 2^421086018 is an apocalyptic number.

421086018 is an abundant number, since it is smaller than the sum of its proper divisors (465411102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421086018 is a wasteful number, since it uses less digits than its factorization.

421086018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3693761.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 421086018 is about 20520.3805520268. The cubic root of 421086018 is about 749.5321633436.

The spelling of 421086018 in words is "four hundred twenty-one million, eighty-six thousand, eighteen".