250420241321 has 4 divisors (see below), whose sum is σ = 250761879492. Its totient is φ = 250078603152.

The previous prime is 250420241299. The next prime is 250420241333. The reversal of 250420241321 is 123142024052.

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 187489000000 + 62931241321 = 433000^2 + 250861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-250420241321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (250420241341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170817986 + ... + 170819451.

It is an arithmetic number, because the mean of its divisors is an integer number (62690469873).

Almost surely, 2^250420241321 is an apocalyptic number.

It is an amenable number.

250420241321 is a deficient number, since it is larger than the sum of its proper divisors (341638171).

250420241321 is an equidigital number, since it uses as much as digits as its factorization.

250420241321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341638170.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 250420241321 its reverse (123142024052), we get a palindrome (373562265373).

The spelling of 250420241321 in words is "two hundred fifty billion, four hundred twenty million, two hundred forty-one thousand, three hundred twenty-one".