420211284 has 12 divisors (see below), whose sum is σ = 980493024. Its totient is φ = 140070424.

The previous prime is 420211283. The next prime is 420211313. The reversal of 420211284 is 482112024.

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 (420211283) 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, 17508792 + ... + 17508815.

It is an arithmetic number, because the mean of its divisors is an integer number (81707752).

Almost surely, 2^420211284 is an apocalyptic number.

It is an amenable number.

420211284 is an abundant number, since it is smaller than the sum of its proper divisors (560281740).

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

420211284 is a wasteful number, since it uses less digits than its factorization.

420211284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35017614 (or 35017612 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 420211284 is about 20499.0556855676. The cubic root of 420211284 is about 749.0127953617.

The spelling of 420211284 in words is "four hundred twenty million, two hundred eleven thousand, two hundred eighty-four".