420065652 has 48 divisors (see below), whose sum is σ = 1036828800. Its totient is φ = 132092928.

The previous prime is 420065647. The next prime is 420065669. The reversal of 420065652 is 256560024.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9724 + ... + 30572.

It is an arithmetic number, because the mean of its divisors is an integer number (21600600).

Almost surely, 2^420065652 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420065652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (518414400).

420065652 is an abundant number, since it is smaller than the sum of its proper divisors (616763148).

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

420065652 is a wasteful number, since it uses less digits than its factorization.

420065652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20952 (or 20950 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 420065652 is about 20495.5032141199. The cubic root of 420065652 is about 748.9262572801.

The spelling of 420065652 in words is "four hundred twenty million, sixty-five thousand, six hundred fifty-two".