117128741 has 2 divisors, whose sum is σ = 117128742. Its totient is φ = 117128740.

The previous prime is 117128729. The next prime is 117128777. The reversal of 117128741 is 147821711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103103716 + 14025025 = 10154^2 + 3745^2 .

It is an emirp because it is prime and its reverse (147821711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117128741 - 2¹⁴ = 117112357 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 117128698 and 117128707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117128041) 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, 58564370 + 58564371.

It is an arithmetic number, because the mean of its divisors is an integer number (58564371).

Almost surely, 2^117128741 is an apocalyptic number.

It is an amenable number.

117128741 is a deficient number, since it is larger than the sum of its proper divisors (1).

117128741 is an equidigital number, since it uses as much as digits as its factorization.

117128741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3136, while the sum is 32.

The square root of 117128741 is about 10822.6032450608. The cubic root of 117128741 is about 489.2766517095.

The spelling of 117128741 in words is "one hundred seventeen million, one hundred twenty-eight thousand, seven hundred forty-one".