421984212 has 72 divisors (see below), whose sum is σ = 1071735840. Its totient is φ = 129168000.

The previous prime is 421984181. The next prime is 421984231. The reversal of 421984212 is 212489124.

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 23 ways as a sum of consecutive naturals, for example, 508614 + ... + 509442.

It is an arithmetic number, because the mean of its divisors is an integer number (14885220).

Almost surely, 2^421984212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421984212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (535867920).

421984212 is an abundant number, since it is smaller than the sum of its proper divisors (649751628).

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

421984212 is a wasteful number, since it uses less digits than its factorization.

421984212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113 (or 1098 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 421984212 is about 20542.2543066724. The cubic root of 421984212 is about 750.0647126384.

The spelling of 421984212 in words is "four hundred twenty-one million, nine hundred eighty-four thousand, two hundred twelve".