250121020 has 48 divisors (see below), whose sum is σ = 543916800. Its totient is φ = 96514560.

The previous prime is 250121009. The next prime is 250121041. The reversal of 250121020 is 20121052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352426 + ... + 353134.

It is an arithmetic number, because the mean of its divisors is an integer number (11331600).

Almost surely, 2^250121020 is an apocalyptic number.

250121020 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 250121020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271958400).

250121020 is an abundant number, since it is smaller than the sum of its proper divisors (293795780).

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

250121020 is a wasteful number, since it uses less digits than its factorization.

250121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318 (or 1316 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 250121020 is about 15815.2148262362. The cubic root of 250121020 is about 630.0621589798.

Adding to 250121020 its reverse (20121052), we get a palindrome (270242072).

The spelling of 250121020 in words is "two hundred fifty million, one hundred twenty-one thousand, twenty".