421021106 has 16 divisors (see below), whose sum is σ = 711168768. Its totient is φ = 185199600.

The previous prime is 421021103. The next prime is 421021121. The reversal of 421021106 is 601120124.

It is not an unprimeable number, because it can be changed into a prime (421021103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307985 + ... + 309348.

It is an arithmetic number, because the mean of its divisors is an integer number (44448048).

Almost surely, 2^421021106 is an apocalyptic number.

421021106 is a deficient number, since it is larger than the sum of its proper divisors (290147662).

421021106 is a wasteful number, since it uses less digits than its factorization.

421021106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617377.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 421021106 is about 20518.7988439869. The cubic root of 421021106 is about 749.4936469598.

The spelling of 421021106 in words is "four hundred twenty-one million, twenty-one thousand, one hundred six".