4122447252 has 144 divisors (see below), whose sum is σ = 12719992320. Its totient is φ = 1014361920.

The previous prime is 4122447247. The next prime is 4122447289. The reversal of 4122447252 is 2527442214.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 182443 + ... + 203789.

It is an arithmetic number, because the mean of its divisors is an integer number (88333280).

Almost surely, 2^4122447252 is an apocalyptic number.

4122447252 is a gapful number since it is divisible by the number (42) 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 4122447252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6359996160).

4122447252 is an abundant number, since it is smaller than the sum of its proper divisors (8597545068).

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

4122447252 is a wasteful number, since it uses less digits than its factorization.

4122447252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21402 (or 21389 counting only the distinct ones).

The product of its digits is 35840, while the sum is 33.

The square root of 4122447252 is about 64206.2867015373. The cubic root of 4122447252 is about 1603.4362673626.

Adding to 4122447252 its reverse (2527442214), we get a palindrome (6649889466).

The spelling of 4122447252 in words is "four billion, one hundred twenty-two million, four hundred forty-seven thousand, two hundred fifty-two".