266242145 has 8 divisors (see below), whose sum is σ = 344066856. Its totient is φ = 196609536.

The previous prime is 266242063. The next prime is 266242147. The reversal of 266242145 is 541242662.

It can be written as a sum of positive squares in 4 ways, for example, as 160801 + 266081344 = 401^2 + 16312^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266242145 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266242147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2047952 + ... + 2048081.

It is an arithmetic number, because the mean of its divisors is an integer number (43008357).

Almost surely, 2^266242145 is an apocalyptic number.

It is an amenable number.

266242145 is a deficient number, since it is larger than the sum of its proper divisors (77824711).

266242145 is a wasteful number, since it uses less digits than its factorization.

266242145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4096051.

The product of its digits is 23040, while the sum is 32.

The square root of 266242145 is about 16316.9281729129. The cubic root of 266242145 is about 643.3178490252.

The spelling of 266242145 in words is "two hundred sixty-six million, two hundred forty-two thousand, one hundred forty-five".