1126140409 has 2 divisors, whose sum is σ = 1126140410. Its totient is φ = 1126140408.

The previous prime is 1126140397. The next prime is 1126140427. The reversal of 1126140409 is 9040416211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1097464384 + 28676025 = 33128^2 + 5355^2 .

It is an emirp because it is prime and its reverse (9040416211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1126140409 is a prime.

It is a super-3 number, since 3×1126140409³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1126140479) 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, 563070204 + 563070205.

It is an arithmetic number, because the mean of its divisors is an integer number (563070205).

Almost surely, 2^1126140409 is an apocalyptic number.

It is an amenable number.

1126140409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1126140409 is an equidigital number, since it uses as much as digits as its factorization.

1126140409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1126140409 is about 33558.0155700542. The cubic root of 1126140409 is about 1040.3932219286.

The spelling of 1126140409 in words is "one billion, one hundred twenty-six million, one hundred forty thousand, four hundred nine".