264250421 has 8 divisors (see below), whose sum is σ = 269734104. Its totient is φ = 258785280.

The previous prime is 264250391. The next prime is 264250451. The reversal of 264250421 is 124052462.

It is an interprime number because it is at equal distance from previous prime (264250391) and next prime (264250451).

It can be written as a sum of positive squares in 4 ways, for example, as 72012196 + 192238225 = 8486^2 + 13865^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 264250421 - 2²⁶ = 197141557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264250451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26261 + ... + 34901.

It is an arithmetic number, because the mean of its divisors is an integer number (33716763).

Almost surely, 2^264250421 is an apocalyptic number.

It is an amenable number.

264250421 is a deficient number, since it is larger than the sum of its proper divisors (5483683).

264250421 is an equidigital number, since it uses as much as digits as its factorization.

264250421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9271.

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

The square root of 264250421 is about 16255.7811562533. The cubic root of 264250421 is about 641.7096387555.

The spelling of 264250421 in words is "two hundred sixty-four million, two hundred fifty thousand, four hundred twenty-one".