266742341 has 4 divisors (see below), whose sum is σ = 267691884. Its totient is φ = 265792800.

The previous prime is 266742323. The next prime is 266742353. The reversal of 266742341 is 143247662.

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

It can be written as a sum of positive squares in 2 ways, for example, as 176092900 + 90649441 = 13270^2 + 9521^2 .

It is a cyclic number.

It is not a de Polignac number, because 266742341 - 2⁶ = 266742277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266742391) 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, 474350 + ... + 474911.

It is an arithmetic number, because the mean of its divisors is an integer number (66922971).

Almost surely, 2^266742341 is an apocalyptic number.

It is an amenable number.

266742341 is a deficient number, since it is larger than the sum of its proper divisors (949543).

266742341 is an equidigital number, since it uses as much as digits as its factorization.

266742341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949542.

The product of its digits is 48384, while the sum is 35.

The square root of 266742341 is about 16332.2484979870. The cubic root of 266742341 is about 643.7204696166.

The spelling of 266742341 in words is "two hundred sixty-six million, seven hundred forty-two thousand, three hundred forty-one".