1145124109 has 2 divisors, whose sum is σ = 1145124110. Its totient is φ = 1145124108.

The previous prime is 1145124047. The next prime is 1145124173. The reversal of 1145124109 is 9014215411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 895326084 + 249798025 = 29922^2 + 15805^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145124109 - 2¹⁷ = 1144993037 is a prime.

It is a super-2 number, since 2×1145124109² = 2622618450026087762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145124179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572562054 + 572562055.

It is an arithmetic number, because the mean of its divisors is an integer number (572562055).

Almost surely, 2^1145124109 is an apocalyptic number.

It is an amenable number.

1145124109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145124109 is an equidigital number, since it uses as much as digits as its factorization.

1145124109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 1145124109 is about 33839.6824600941. The cubic root of 1145124109 is about 1046.2067540828.

The spelling of 1145124109 in words is "one billion, one hundred forty-five million, one hundred twenty-four thousand, one hundred nine".