117491145 has 8 divisors (see below), whose sum is σ = 187985856. Its totient is φ = 62661936.

The previous prime is 117491141. The next prime is 117491161. The reversal of 117491145 is 541194711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 117491145 - 2² = 117491141 is a prime.

It is a super-2 number, since 2×117491145² = 27608338306822050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (117491141) 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 7 ways as a sum of consecutive naturals, for example, 3916357 + ... + 3916386.

It is an arithmetic number, because the mean of its divisors is an integer number (23498232).

Almost surely, 2^117491145 is an apocalyptic number.

117491145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117491145 is a deficient number, since it is larger than the sum of its proper divisors (70494711).

117491145 is an equidigital number, since it uses as much as digits as its factorization.

117491145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7832751.

The product of its digits is 5040, while the sum is 33.

The square root of 117491145 is about 10839.3332359514. Note that the first 3 decimals coincide. The cubic root of 117491145 is about 489.7807501693.

The spelling of 117491145 in words is "one hundred seventeen million, four hundred ninety-one thousand, one hundred forty-five".