117742887 has 24 divisors (see below), whose sum is σ = 173357184. Its totient is φ = 76994064.

The previous prime is 117742861. The next prime is 117742903. The reversal of 117742887 is 788247711.

It is not a de Polignac number, because 117742887 - 2¹⁴ = 117726503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117742847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121278 + ... + 122244.

It is an arithmetic number, because the mean of its divisors is an integer number (7223216).

Almost surely, 2^117742887 is an apocalyptic number.

117742887 is a deficient number, since it is larger than the sum of its proper divisors (55614297).

117742887 is a wasteful number, since it uses less digits than its factorization.

117742887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219 (or 1216 counting only the distinct ones).

The product of its digits is 175616, while the sum is 45.

The square root of 117742887 is about 10850.9394524161. The cubic root of 117742887 is about 490.1303096436.

The spelling of 117742887 in words is "one hundred seventeen million, seven hundred forty-two thousand, eight hundred eighty-seven".