117420871 has 4 divisors (see below), whose sum is σ = 117451432. Its totient is φ = 117390312.

The previous prime is 117420859. The next prime is 117420889. The reversal of 117420871 is 178024711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 117420871 - 2¹¹ = 117418823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117420271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8520 + ... + 17533.

It is an arithmetic number, because the mean of its divisors is an integer number (29362858).

Almost surely, 2^117420871 is an apocalyptic number.

117420871 is a deficient number, since it is larger than the sum of its proper divisors (30561).

117420871 is an equidigital number, since it uses as much as digits as its factorization.

117420871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30560.

The product of its (nonzero) digits is 3136, while the sum is 31.

The square root of 117420871 is about 10836.0911310306. The cubic root of 117420871 is about 489.6830812004.

The spelling of 117420871 in words is "one hundred seventeen million, four hundred twenty thousand, eight hundred seventy-one".