268742407 has 2 divisors, whose sum is σ = 268742408. Its totient is φ = 268742406.

The previous prime is 268742387. The next prime is 268742417. The reversal of 268742407 is 704247862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268742407 - 2¹¹ = 268740359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 268742407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268742417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134371203 + 134371204.

It is an arithmetic number, because the mean of its divisors is an integer number (134371204).

Almost surely, 2^268742407 is an apocalyptic number.

268742407 is a deficient number, since it is larger than the sum of its proper divisors (1).

268742407 is an equidigital number, since it uses as much as digits as its factorization.

268742407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150528, while the sum is 40.

The square root of 268742407 is about 16393.3647247903. The cubic root of 268742407 is about 645.3253627584.

The spelling of 268742407 in words is "two hundred sixty-eight million, seven hundred forty-two thousand, four hundred seven".