1123127743429 has 2 divisors, whose sum is σ = 1123127743430. Its totient is φ = 1123127743428.

The previous prime is 1123127743357. The next prime is 1123127743457. The reversal of 1123127743429 is 9243477213211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 755560792900 + 367566950529 = 869230^2 + 606273^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123127743429 is a prime.

It is a super-2 number, since 2×1123127743429² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123127743489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561563871714 + 561563871715.

It is an arithmetic number, because the mean of its divisors is an integer number (561563871715).

Almost surely, 2^{1123127743429} is an apocalyptic number.

It is an amenable number.

1123127743429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123127743429 is an equidigital number, since it uses as much as digits as its factorization.

1123127743429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 46.

The spelling of 1123127743429 in words is "one trillion, one hundred twenty-three billion, one hundred twenty-seven million, seven hundred forty-three thousand, four hundred twenty-nine".