4252121440 has 48 divisors (see below), whose sum is σ = 11480730912. Its totient is φ = 1457869824.

The previous prime is 4252121429. The next prime is 4252121453. The reversal of 4252121440 is 441212524.

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 7 ways as a sum of consecutive naturals, for example, 1897149 + ... + 1899388.

It is an arithmetic number, because the mean of its divisors is an integer number (239181894).

Almost surely, 2^4252121440 is an apocalyptic number.

4252121440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4252121440 is an abundant number, since it is smaller than the sum of its proper divisors (7228609472).

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

4252121440 is a wasteful number, since it uses less digits than its factorization.

4252121440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3796559 (or 3796551 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 4252121440 is about 65208.2927241620. The cubic root of 4252121440 is about 1620.0753711821.

Adding to 4252121440 its reverse (441212524), we get a palindrome (4693333964).

The spelling of 4252121440 in words is "four billion, two hundred fifty-two million, one hundred twenty-one thousand, four hundred forty".