420562530 has 96 divisors (see below), whose sum is σ = 1193774400. Its totient is φ = 106235712.

The previous prime is 420562529. The next prime is 420562559. The reversal of 420562530 is 35265024.

420562530 is a `hidden beast` number, since 4 + 2 + 0 + 5 + 625 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 420562494 and 420562503.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 41616 + ... + 50724.

It is an arithmetic number, because the mean of its divisors is an integer number (12435150).

Almost surely, 2^420562530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420562530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (596887200).

420562530 is an abundant number, since it is smaller than the sum of its proper divisors (773211870).

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

420562530 is a wasteful number, since it uses less digits than its factorization.

420562530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9150 (or 9138 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 420562530 is about 20507.6212662512. The cubic root of 420562530 is about 749.2214320556.

The spelling of 420562530 in words is "four hundred twenty million, five hundred sixty-two thousand, five hundred thirty".