250312421 has 4 divisors (see below), whose sum is σ = 256417644. Its totient is φ = 244207200.

The previous prime is 250312399. The next prime is 250312487. The reversal of 250312421 is 124213052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 137124100 + 113188321 = 11710^2 + 10639^2 .

It is a cyclic number.

It is not a de Polignac number, because 250312421 - 2⁶ = 250312357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 250312393 and 250312402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250312721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3052550 + ... + 3052631.

It is an arithmetic number, because the mean of its divisors is an integer number (64104411).

Almost surely, 2^250312421 is an apocalyptic number.

It is an amenable number.

250312421 is a deficient number, since it is larger than the sum of its proper divisors (6105223).

250312421 is an equidigital number, since it uses as much as digits as its factorization.

250312421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6105222.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 250312421 is about 15821.2648356571. The cubic root of 250312421 is about 630.2228329066. Note that the first 3 decimals are identical.

Adding to 250312421 its reverse (124213052), we get a palindrome (374525473).

The spelling of 250312421 in words is "two hundred fifty million, three hundred twelve thousand, four hundred twenty-one".