268141921 has 8 divisors (see below), whose sum is σ = 272275304. Its totient is φ = 264021120.

The previous prime is 268141903. The next prime is 268141933. The reversal of 268141921 is 129141862.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 152794321 + 115347600 = 12361^2 + 10740^2 .

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 268141921 - 2⁷ = 268141793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268141021) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 45475 + ... + 51031.

It is an arithmetic number, because the mean of its divisors is an integer number (34034413).

Almost surely, 2^268141921 is an apocalyptic number.

It is an amenable number.

268141921 is a deficient number, since it is larger than the sum of its proper divisors (4133383).

268141921 is an equidigital number, since it uses as much as digits as its factorization.

268141921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6291.

The product of its digits is 6912, while the sum is 34.

The square root of 268141921 is about 16375.0395724713. The cubic root of 268141921 is about 644.8443596182.

The spelling of 268141921 in words is "two hundred sixty-eight million, one hundred forty-one thousand, nine hundred twenty-one".