250121040 has 80 divisors (see below), whose sum is σ = 835029888. Its totient is φ = 61567488.

The previous prime is 250121009. The next prime is 250121041. The reversal of 250121040 is 40121052.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250121041) 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 15 ways as a sum of consecutive naturals, for example, 36964 + ... + 43203.

Almost surely, 2^250121040 is an apocalyptic number.

250121040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

250121040 is an abundant number, since it is smaller than the sum of its proper divisors (584908848).

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

250121040 is a wasteful number, since it uses less digits than its factorization.

250121040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80196 (or 80190 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 250121040 is about 15815.2154585387. The cubic root of 250121040 is about 630.0621757734.

Adding to 250121040 its reverse (40121052), we get a palindrome (290242092).

The spelling of 250121040 in words is "two hundred fifty million, one hundred twenty-one thousand, forty".