4268521305 has 24 divisors (see below), whose sum is σ = 7402154760. Its totient is φ = 2275503360.

The previous prime is 4268521277. The next prime is 4268521351. The reversal of 4268521305 is 5031258624.

4268521305 is a `hidden beast` number, since 42 + 68 + 521 + 30 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 857494089 + 3411027216 = 29283^2 + 58404^2 .

It is not a de Polignac number, because 4268521305 - 2⁶ = 4268521241 is a prime.

It is a super-3 number, since 3×4268521305³ (a number of 30 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4268521305.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83365 + ... + 124445.

It is an arithmetic number, because the mean of its divisors is an integer number (308423115).

Almost surely, 2^4268521305 is an apocalyptic number.

4268521305 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4268521305 is a deficient number, since it is larger than the sum of its proper divisors (3133633455).

4268521305 is a wasteful number, since it uses less digits than its factorization.

4268521305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43401 (or 43398 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 4268521305 is about 65333.9215492228. The cubic root of 4268521305 is about 1622.1555040472.

Adding to 4268521305 its reverse (5031258624), we get a palindrome (9299779929).

The spelling of 4268521305 in words is "four billion, two hundred sixty-eight million, five hundred twenty-one thousand, three hundred five".