4221542430 has 96 divisors (see below), whose sum is σ = 12559105728. Its totient is φ = 963763200.

The previous prime is 4221542401. The next prime is 4221542443. The reversal of 4221542430 is 342451224.

4221542430 is a `hidden beast` number, since 4 + 221 + 5 + 4 + 2 + 430 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 4221542394 and 4221542403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 589270 + ... + 596390.

It is an arithmetic number, because the mean of its divisors is an integer number (130824018).

Almost surely, 2^4221542430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4221542430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6279552864).

4221542430 is an abundant number, since it is smaller than the sum of its proper divisors (8337563298).

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

4221542430 is a wasteful number, since it uses less digits than its factorization.

4221542430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8082 (or 8079 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 4221542430 is about 64973.3978640489. The cubic root of 4221542430 is about 1616.1824490010.

Adding to 4221542430 its reverse (342451224), we get a palindrome (4563993654).

The spelling of 4221542430 in words is "four billion, two hundred twenty-one million, five hundred forty-two thousand, four hundred thirty".