252421023040 has 28 divisors (see below), whose sum is σ = 601077561876. Its totient is φ = 100968409088.

The previous prime is 252421023031. The next prime is 252421023053. The reversal of 252421023040 is 40320124252.

252421023040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 177187116096 + 75233906944 = 420936^2 + 274288^2 .

It is a junction number, because it is equal to n+sod(n) for n = 252421022996 and 252421023014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394407529 + ... + 394408168.

Almost surely, 2^252421023040 is an apocalyptic number.

252421023040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252421023040 is an abundant number, since it is smaller than the sum of its proper divisors (348656538836).

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

252421023040 is an equidigital number, since it uses as much as digits as its factorization.

252421023040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788815714 (or 788815704 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 252421023040 its reverse (40320124252), we get a palindrome (292741147292).

The spelling of 252421023040 in words is "two hundred fifty-two billion, four hundred twenty-one million, twenty-three thousand, forty".