117749121 has 16 divisors (see below), whose sum is σ = 187229184. Its totient is φ = 64359504.

The previous prime is 117749119. The next prime is 117749131. The reversal of 117749121 is 121947711.

It is a happy number.

It is not a de Polignac number, because 117749121 - 2¹ = 117749119 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (117749131) 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 15 ways as a sum of consecutive naturals, for example, 121411 + ... + 122376.

It is an arithmetic number, because the mean of its divisors is an integer number (11701824).

Almost surely, 2^117749121 is an apocalyptic number.

It is an amenable number.

117749121 is a deficient number, since it is larger than the sum of its proper divisors (69480063).

117749121 is a wasteful number, since it uses less digits than its factorization.

117749121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243820.

The product of its digits is 3528, while the sum is 33.

The square root of 117749121 is about 10851.2267048477. The cubic root of 117749121 is about 490.1389596168.

The spelling of 117749121 in words is "one hundred seventeen million, seven hundred forty-nine thousand, one hundred twenty-one".