421255212 has 192 divisors, whose sum is σ = 1235533824. Its totient is φ = 109105920.

The previous prime is 421255193. The next prime is 421255217. The reversal of 421255212 is 212552124.

It is not an unprimeable number, because it can be changed into a prime (421255217) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5075323 + ... + 5075405.

It is an arithmetic number, because the mean of its divisors is an integer number (6435072).

Almost surely, 2^421255212 is an apocalyptic number.

421255212 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421255212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (617766912).

421255212 is an abundant number, since it is smaller than the sum of its proper divisors (814278612).

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

421255212 is a wasteful number, since it uses less digits than its factorization.

421255212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 226 counting only the distinct ones).

The product of its digits is 1600, while the sum is 24.

The square root of 421255212 is about 20524.5027223560. The cubic root of 421255212 is about 749.6325382141.

The spelling of 421255212 in words is "four hundred twenty-one million, two hundred fifty-five thousand, two hundred twelve".