250121320 has 128 divisors (see below), whose sum is σ = 635040000. Its totient is φ = 88197120.

The previous prime is 250121303. The next prime is 250121329. The reversal of 250121320 is 23121052.

It is a junction number, because it is equal to n+sod(n) for n = 250121294 and 250121303.

It is not an unprimeable number, because it can be changed into a prime (250121329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 716506 + ... + 716854.

It is an arithmetic number, because the mean of its divisors is an integer number (4961250).

Almost surely, 2^250121320 is an apocalyptic number.

250121320 is a gapful number since it is divisible by the number (20) 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 250121320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317520000).

250121320 is an abundant number, since it is smaller than the sum of its proper divisors (384918680).

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

250121320 is a wasteful number, since it uses less digits than its factorization.

250121320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 250121320 is about 15815.2243107709. The cubic root of 250121320 is about 630.0624108827.

Adding to 250121320 its reverse (23121052), we get a palindrome (273242372).

The spelling of 250121320 in words is "two hundred fifty million, one hundred twenty-one thousand, three hundred twenty".