421814409212 has 24 divisors (see below), whose sum is σ = 843775884000. Its totient is φ = 180746089920.

The previous prime is 421814409199. The next prime is 421814409221. The reversal of 421814409212 is 212904418124.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1149239 + ... + 1471182.

It is an arithmetic number, because the mean of its divisors is an integer number (35157328500).

Almost surely, 2^421814409212 is an apocalyptic number.

It is an amenable number.

421814409212 is an abundant number, since it is smaller than the sum of its proper divisors (421961474788).

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

421814409212 is a wasteful number, since it uses less digits than its factorization.

421814409212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2626181 (or 2626179 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The spelling of 421814409212 in words is "four hundred twenty-one billion, eight hundred fourteen million, four hundred nine thousand, two hundred twelve".