1045666123 has 2 divisors, whose sum is σ = 1045666124. Its totient is φ = 1045666122.

The previous prime is 1045666031. The next prime is 1045666133. The reversal of 1045666123 is 3216665401.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1045666123 - 2²⁹ = 508795211 is a prime.

It is a super-2 number, since 2×1045666123² = 2186835281579702258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1045666133) 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, 522833061 + 522833062.

It is an arithmetic number, because the mean of its divisors is an integer number (522833062).

Almost surely, 2^1045666123 is an apocalyptic number.

1045666123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1045666123 is an equidigital number, since it uses as much as digits as its factorization.

1045666123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1045666123 is about 32336.7611705316. The cubic root of 1045666123 is about 1014.9960358019.

The spelling of 1045666123 in words is "one billion, forty-five million, six hundred sixty-six thousand, one hundred twenty-three".