4221542424 has 64 divisors (see below), whose sum is σ = 11675508480. Its totient is φ = 1261232000.

The previous prime is 4221542401. The next prime is 4221542443. The reversal of 4221542424 is 4242451224.

It is a junction number, because it is equal to n+sod(n) for n = 4221542391 and 4221542400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93867 + ... + 131354.

It is an arithmetic number, because the mean of its divisors is an integer number (182429820).

Almost surely, 2^4221542424 is an apocalyptic number.

4221542424 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4221542424 is an abundant number, since it is smaller than the sum of its proper divisors (7453966056).

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

4221542424 is a wasteful number, since it uses less digits than its factorization.

4221542424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225312 (or 225308 counting only the distinct ones).

The product of its digits is 20480, while the sum is 30.

The square root of 4221542424 is about 64973.3978178762. The cubic root of 4221542424 is about 1616.1824482354.

Adding to 4221542424 its reverse (4242451224), we get a palindrome (8463993648).

It can be divided in two parts, 4221 and 542424, that added together give a palindrome (546645).

The spelling of 4221542424 in words is "four billion, two hundred twenty-one million, five hundred forty-two thousand, four hundred twenty-four".