266260043 has 4 divisors (see below), whose sum is σ = 304297200. Its totient is φ = 228222888.

The previous prime is 266260021. The next prime is 266260067. The reversal of 266260043 is 340062662.

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 266260043 - 2¹² = 266255947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 266259988 and 266260015.

It is not an unprimeable number, because it can be changed into a prime (266260013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19018568 + ... + 19018581.

It is an arithmetic number, because the mean of its divisors is an integer number (76074300).

Almost surely, 2^266260043 is an apocalyptic number.

266260043 is a deficient number, since it is larger than the sum of its proper divisors (38037157).

266260043 is an equidigital number, since it uses as much as digits as its factorization.

266260043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38037156.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 266260043 is about 16317.4766125158. The cubic root of 266260043 is about 643.3322642797.

The spelling of 266260043 in words is "two hundred sixty-six million, two hundred sixty thousand, forty-three".