450421212 has 12 divisors (see below), whose sum is σ = 1050982856. Its totient is φ = 150140400.

The previous prime is 450421207. The next prime is 450421219. The reversal of 450421212 is 212124054.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450421219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18767539 + ... + 18767562.

Almost surely, 2^450421212 is an apocalyptic number.

It is an amenable number.

450421212 is an abundant number, since it is smaller than the sum of its proper divisors (600561644).

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

450421212 is a wasteful number, since it uses less digits than its factorization.

450421212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37535108 (or 37535106 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 450421212 is about 21223.1291755010. The cubic root of 450421212 is about 766.5484531870.

Adding to 450421212 its reverse (212124054), we get a palindrome (662545266).

The spelling of 450421212 in words is "four hundred fifty million, four hundred twenty-one thousand, two hundred twelve".