420055212 has 12 divisors (see below), whose sum is σ = 980128856. Its totient is φ = 140018400.

The previous prime is 420055201. The next prime is 420055217. The reversal of 420055212 is 212550024.

It is a happy number.

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

It is a super-2 number, since 2×420055212² = 352892762256729888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420055217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17502289 + ... + 17502312.

Almost surely, 2^420055212 is an apocalyptic number.

It is an amenable number.

420055212 is an abundant number, since it is smaller than the sum of its proper divisors (560073644).

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

420055212 is a wasteful number, since it uses less digits than its factorization.

420055212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35004608 (or 35004606 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 420055212 is about 20495.2485225235. The cubic root of 420055212 is about 748.9200528096.

The spelling of 420055212 in words is "four hundred twenty million, fifty-five thousand, two hundred twelve".