1266422260426 has 8 divisors (see below), whose sum is σ = 1899655314084. Its totient is φ = 633203822400.

The previous prime is 1266422260423. The next prime is 1266422260483. The reversal of 1266422260426 is 6240622246621.

It can be written as a sum of positive squares in 2 ways, for example, as 749531720025 + 516890540401 = 865755^2 + 718951^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1266422260423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3434655 + ... + 3785458.

Almost surely, 2^{1266422260426} is an apocalyptic number.

1266422260426 is a deficient number, since it is larger than the sum of its proper divisors (633233053658).

1266422260426 is an equidigital number, since it uses as much as digits as its factorization.

1266422260426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7307816.

The product of its (nonzero) digits is 663552, while the sum is 43.

The spelling of 1266422260426 in words is "one trillion, two hundred sixty-six billion, four hundred twenty-two million, two hundred sixty thousand, four hundred twenty-six".