1266217441 has 8 divisors (see below), whose sum is σ = 1305630144. Its totient is φ = 1227078000.

The previous prime is 1266217439. The next prime is 1266217453. The reversal of 1266217441 is 1447126621.

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 1266217441 - 2¹ = 1266217439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1266217397 and 1266217406.

It is not an unprimeable number, because it can be changed into a prime (1266217241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58885 + ... + 77458.

It is an arithmetic number, because the mean of its divisors is an integer number (163203768).

Almost surely, 2^1266217441 is an apocalyptic number.

It is an amenable number.

1266217441 is a deficient number, since it is larger than the sum of its proper divisors (39412703).

1266217441 is a wasteful number, since it uses less digits than its factorization.

1266217441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136631.

The product of its digits is 16128, while the sum is 34.

The square root of 1266217441 is about 35583.9492046625. The cubic root of 1266217441 is about 1081.8559312100.

It can be divided in two parts, 12662 and 17441, that added together give a palindrome (30103).

The spelling of 1266217441 in words is "one billion, two hundred sixty-six million, two hundred seventeen thousand, four hundred forty-one".