26042563 has 4 divisors (see below), whose sum is σ = 26648248. Its totient is φ = 25436880.

The previous prime is 26042543. The next prime is 26042579. The reversal of 26042563 is 36524062.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26042563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26042543) 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 in 3 ways as a sum of consecutive naturals, for example, 302778 + ... + 302863.

It is an arithmetic number, because the mean of its divisors is an integer number (6662062).

Almost surely, 2^26042563 is an apocalyptic number.

26042563 is a deficient number, since it is larger than the sum of its proper divisors (605685).

26042563 is an equidigital number, since it uses as much as digits as its factorization.

26042563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605684.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 26042563 is about 5103.1914524149. The cubic root of 26042563 is about 296.4111760413.

The spelling of 26042563 in words is "twenty-six million, forty-two thousand, five hundred sixty-three".