1266427003 has 2 divisors, whose sum is σ = 1266427004. Its totient is φ = 1266427002.

The previous prime is 1266426991. The next prime is 1266427027. The reversal of 1266427003 is 3007246621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1266427003 - 2¹⁷ = 1266295931 is a prime.

It is not a weakly prime, because it can be changed into another prime (1266427093) 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 as a sum of consecutive naturals, namely, 633213501 + 633213502.

It is an arithmetic number, because the mean of its divisors is an integer number (633213502).

Almost surely, 2^1266427003 is an apocalyptic number.

1266427003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266427003 is an equidigital number, since it uses as much as digits as its factorization.

1266427003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 1266427003 is about 35586.8936969778. The cubic root of 1266427003 is about 1081.9156111615.

The spelling of 1266427003 in words is "one billion, two hundred sixty-six million, four hundred twenty-seven thousand, three".