250123201240 has 256 divisors, whose sum is σ = 638892334080. Its totient is φ = 87331829760.

The previous prime is 250123201201. The next prime is 250123201297. The reversal of 250123201240 is 42102321052.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

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 63 ways as a sum of consecutive naturals, for example, 535595487 + ... + 535595953.

It is an arithmetic number, because the mean of its divisors is an integer number (2495673180).

Almost surely, 2^250123201240 is an apocalyptic number.

250123201240 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 250123201240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319446167040).

250123201240 is an abundant number, since it is smaller than the sum of its proper divisors (388769132840).

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

250123201240 is a wasteful number, since it uses less digits than its factorization.

250123201240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890 (or 886 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 250123201240 its reverse (42102321052), we get a palindrome (292225522292).

The spelling of 250123201240 in words is "two hundred fifty billion, one hundred twenty-three million, two hundred one thousand, two hundred forty".