1117721743 has 2 divisors, whose sum is σ = 1117721744. Its totient is φ = 1117721742.

The previous prime is 1117721707. The next prime is 1117721791. The reversal of 1117721743 is 3471277111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1117721743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1117721699 and 1117721708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1117721443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558860871 + 558860872.

It is an arithmetic number, because the mean of its divisors is an integer number (558860872).

Almost surely, 2^1117721743 is an apocalyptic number.

1117721743 is a deficient number, since it is larger than the sum of its proper divisors (1).

1117721743 is an equidigital number, since it uses as much as digits as its factorization.

1117721743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8232, while the sum is 34.

The square root of 1117721743 is about 33432.3457597579. The cubic root of 1117721743 is about 1037.7941854676.

Adding to 1117721743 its reverse (3471277111), we get a palindrome (4588998854).

The spelling of 1117721743 in words is "one billion, one hundred seventeen million, seven hundred twenty-one thousand, seven hundred forty-three".