1266210041 has 8 divisors (see below), whose sum is σ = 1304171400. Its totient is φ = 1228445568.

The previous prime is 1266210037. The next prime is 1266210059. The reversal of 1266210041 is 1400126621.

It can be written as a sum of positive squares in 4 ways, for example, as 332296441 + 933913600 = 18229^2 + 30560^2 .

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 1266210041 - 2² = 1266210037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1266209989 and 1266210016.

It is not an unprimeable number, because it can be changed into a prime (1266210061) 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, 36116 + ... + 61941.

It is an arithmetic number, because the mean of its divisors is an integer number (163021425).

Almost surely, 2^1266210041 is an apocalyptic number.

It is an amenable number.

1266210041 is a deficient number, since it is larger than the sum of its proper divisors (37961359).

1266210041 is an equidigital number, since it uses as much as digits as its factorization.

1266210041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98443.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1266210041 is about 35583.8452250456. The cubic root of 1266210041 is about 1081.8538236864.

Adding to 1266210041 its reverse (1400126621), we get a palindrome (2666336662).

The spelling of 1266210041 in words is "one billion, two hundred sixty-six million, two hundred ten thousand, forty-one".