420243030 has 96 divisors (see below), whose sum is σ = 1138239648. Its totient is φ = 107481600.

The previous prime is 420242993. The next prime is 420243049. The reversal of 420243030 is 30342024.

420243030 is a `hidden beast` number, since 4 + 202 + 430 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 420242994 and 420243012.

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 47 ways as a sum of consecutive naturals, for example, 224157 + ... + 226023.

It is an arithmetic number, because the mean of its divisors is an integer number (11856663).

Almost surely, 2^420243030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420243030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (569119824).

420243030 is an abundant number, since it is smaller than the sum of its proper divisors (717996618).

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

420243030 is a wasteful number, since it uses less digits than its factorization.

420243030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982 (or 1979 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 420243030 is about 20499.8299992951. The cubic root of 420243030 is about 749.0316569537.

Adding to 420243030 its reverse (30342024), we get a palindrome (450585054).

It can be divided in two parts, 42024 and 3030, that added together give a palindrome (45054).

The spelling of 420243030 in words is "four hundred twenty million, two hundred forty-three thousand, thirty".