266042879 has 4 divisors (see below), whose sum is σ = 269687376. Its totient is φ = 262398384.

The previous prime is 266042831. The next prime is 266042929. The reversal of 266042879 is 978240662.

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 266042879 - 2¹² = 266038783 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 (266042479) 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, 1822139 + ... + 1822284.

It is an arithmetic number, because the mean of its divisors is an integer number (67421844).

Almost surely, 2^266042879 is an apocalyptic number.

266042879 is a deficient number, since it is larger than the sum of its proper divisors (3644497).

266042879 is an equidigital number, since it uses as much as digits as its factorization.

266042879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3644496.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 266042879 is about 16310.8209174155. The cubic root of 266042879 is about 643.1573142497.

The spelling of 266042879 in words is "two hundred sixty-six million, forty-two thousand, eight hundred seventy-nine".