430021240 has 64 divisors (see below), whose sum is σ = 1058780160. Its totient is φ = 155886720.

The previous prime is 430021213. The next prime is 430021247. The reversal of 430021240 is 42120034.

It is a super-2 number, since 2×430021240² = 369836533702275200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (430021247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160149 + ... + 162811.

It is an arithmetic number, because the mean of its divisors is an integer number (16543440).

Almost surely, 2^430021240 is an apocalyptic number.

430021240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 430021240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (529390080).

430021240 is an abundant number, since it is smaller than the sum of its proper divisors (628758920).

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

430021240 is a wasteful number, since it uses less digits than its factorization.

430021240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3052 (or 3048 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 430021240 is about 20736.9534888807. The cubic root of 430021240 is about 754.7966588343.

Adding to 430021240 its reverse (42120034), we get a palindrome (472141274).

The spelling of 430021240 in words is "four hundred thirty million, twenty-one thousand, two hundred forty".