4221542532 has 96 divisors (see below), whose sum is σ = 10257730560. Its totient is φ = 1350328320.

The previous prime is 4221542483. The next prime is 4221542539. The reversal of 4221542532 is 2352451224.

It is a self number, because there is not a number n which added to its sum of digits gives 4221542532.

It is not an unprimeable number, because it can be changed into a prime (4221542539) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 11958868 + ... + 11959220.

It is an arithmetic number, because the mean of its divisors is an integer number (106851360).

Almost surely, 2^4221542532 is an apocalyptic number.

It is an amenable number.

4221542532 is an abundant number, since it is smaller than the sum of its proper divisors (6036188028).

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

4221542532 is a wasteful number, since it uses less digits than its factorization.

4221542532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733 (or 731 counting only the distinct ones).

The product of its digits is 19200, while the sum is 30.

The square root of 4221542532 is about 64973.3986489856. The cubic root of 4221542532 is about 1616.1824620177.

Adding to 4221542532 its reverse (2352451224), we get a palindrome (6573993756).

The spelling of 4221542532 in words is "four billion, two hundred twenty-one million, five hundred forty-two thousand, five hundred thirty-two".