268542479 has 4 divisors (see below), whose sum is σ = 268942176. Its totient is φ = 268142784.

The previous prime is 268542473. The next prime is 268542481. The reversal of 268542479 is 974245862.

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

It is a cyclic number.

It is not a de Polignac number, because 268542479 - 2⁸ = 268542223 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 (268542473) 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, 198839 + ... + 200184.

It is an arithmetic number, because the mean of its divisors is an integer number (67235544).

Almost surely, 2^268542479 is an apocalyptic number.

268542479 is a deficient number, since it is larger than the sum of its proper divisors (399697).

268542479 is an equidigital number, since it uses as much as digits as its factorization.

268542479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399696.

The product of its digits is 967680, while the sum is 47.

The square root of 268542479 is about 16387.2657572885. The cubic root of 268542479 is about 645.1652954560.

The spelling of 268542479 in words is "two hundred sixty-eight million, five hundred forty-two thousand, four hundred seventy-nine".