421213166 has 32 divisors (see below), whose sum is σ = 730512000. Its totient is φ = 180139680.

The previous prime is 421213159. The next prime is 421213171. The reversal of 421213166 is 661312124.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58901 + ... + 65663.

It is an arithmetic number, because the mean of its divisors is an integer number (22828500).

Almost surely, 2^421213166 is an apocalyptic number.

421213166 is a deficient number, since it is larger than the sum of its proper divisors (309298834).

421213166 is a wasteful number, since it uses less digits than its factorization.

421213166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6944.

The product of its digits is 1728, while the sum is 26.

The square root of 421213166 is about 20523.4784088858. The cubic root of 421213166 is about 749.6075968029.

The spelling of 421213166 in words is "four hundred twenty-one million, two hundred thirteen thousand, one hundred sixty-six".