1266012241 has 8 divisors (see below), whose sum is σ = 1364535144. Its totient is φ = 1167651840.

The previous prime is 1266012229. The next prime is 1266012247. The reversal of 1266012241 is 1422106621.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 53231616 + 1212780625 = 7296^2 + 34825^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1266012241 - 2²¹ = 1263915089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1266012247) 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, 24190 + ... + 55831.

It is an arithmetic number, because the mean of its divisors is an integer number (170566893).

Almost surely, 2^1266012241 is an apocalyptic number.

It is an amenable number.

1266012241 is a deficient number, since it is larger than the sum of its proper divisors (98522903).

1266012241 is a wasteful number, since it uses less digits than its factorization.

1266012241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81251.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1266012241 is about 35581.0657653758. The cubic root of 1266012241 is about 1081.7974871063.

Adding to 1266012241 its reverse (1422106621), we get a palindrome (2688118862).

The spelling of 1266012241 in words is "one billion, two hundred sixty-six million, twelve thousand, two hundred forty-one".