1123040453 has 2 divisors, whose sum is σ = 1123040454. Its totient is φ = 1123040452.

The previous prime is 1123040437. The next prime is 1123040507. The reversal of 1123040453 is 3540403211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 789722404 + 333318049 = 28102^2 + 18257^2 .

It is an emirp because it is prime and its reverse (3540403211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1123040453 - 2⁴ = 1123040437 is a prime.

It is a super-2 number, since 2×1123040453² = 2522439718148890418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123045453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561520226 + 561520227.

It is an arithmetic number, because the mean of its divisors is an integer number (561520227).

Almost surely, 2^1123040453 is an apocalyptic number.

It is an amenable number.

1123040453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123040453 is an equidigital number, since it uses as much as digits as its factorization.

1123040453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1123040453 is about 33511.7957292652. The cubic root of 1123040453 is about 1039.4377054707.

Adding to 1123040453 its reverse (3540403211), we get a palindrome (4663443664).

The spelling of 1123040453 in words is "one billion, one hundred twenty-three million, forty thousand, four hundred fifty-three".