117542169 has 6 divisors (see below), whose sum is σ = 169783146. Its totient is φ = 78361440.

The previous prime is 117542149. The next prime is 117542179. The reversal of 117542169 is 961245711.

117542169 is a `hidden beast` number, since 1 + 175 + 421 + 69 = 666.

It can be written as a sum of positive squares in only one way, i.e., 102819600 + 14722569 = 10140^2 + 3837^2 .

It is not a de Polignac number, because 117542169 - 2⁸ = 117541913 is a prime.

It is a super-2 number, since 2×117542169² = 27632322986449122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (117542119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6530112 + ... + 6530129.

It is an arithmetic number, because the mean of its divisors is an integer number (28297191).

Almost surely, 2^117542169 is an apocalyptic number.

It is an amenable number.

117542169 is a deficient number, since it is larger than the sum of its proper divisors (52240977).

117542169 is a wasteful number, since it uses less digits than its factorization.

117542169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13060247 (or 13060244 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 117542169 is about 10841.6866307784. The cubic root of 117542169 is about 489.8516404939.

It can be divided in two parts, 117542 and 169, that added together give a palindrome (117711).

The spelling of 117542169 in words is "one hundred seventeen million, five hundred forty-two thousand, one hundred sixty-nine".