420904212 has 24 divisors (see below), whose sum is σ = 982679712. Its totient is φ = 140220000.

The previous prime is 420904199. The next prime is 420904213. The reversal of 420904212 is 212409024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420904213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13587 + ... + 32037.

It is an arithmetic number, because the mean of its divisors is an integer number (40944988).

Almost surely, 2^420904212 is an apocalyptic number.

It is an amenable number.

420904212 is an abundant number, since it is smaller than the sum of its proper divisors (561775500).

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

420904212 is a wasteful number, since it uses less digits than its factorization.

420904212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20359 (or 20357 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 420904212 is about 20515.9501851608. The cubic root of 420904212 is about 749.4242763917.

The spelling of 420904212 in words is "four hundred twenty million, nine hundred four thousand, two hundred twelve".