1123120517 has 2 divisors, whose sum is σ = 1123120518. Its totient is φ = 1123120516.

The previous prime is 1123120513. The next prime is 1123120561. The reversal of 1123120517 is 7150213211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1094881921 + 28238596 = 33089^2 + 5314^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123120517 - 2² = 1123120513 is a prime.

It is a super-2 number, since 2×1123120517² = 2522799391412694578, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123120492 and 1123120501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123120513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561560258 + 561560259.

It is an arithmetic number, because the mean of its divisors is an integer number (561560259).

Almost surely, 2^1123120517 is an apocalyptic number.

It is an amenable number.

1123120517 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123120517 is an equidigital number, since it uses as much as digits as its factorization.

1123120517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 1123120517 is about 33512.9902724302. The cubic root of 1123120517 is about 1039.4624061431.

Adding to 1123120517 its reverse (7150213211), we get a palindrome (8273333728).

The spelling of 1123120517 in words is "one billion, one hundred twenty-three million, one hundred twenty thousand, five hundred seventeen".