117158078 has 4 divisors (see below), whose sum is σ = 175737120. Its totient is φ = 58579038.

The previous prime is 117158059. The next prime is 117158089. The reversal of 117158078 is 870851711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 870851711 = 1237 ⋅704003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29289518 + ... + 29289521.

It is an arithmetic number, because the mean of its divisors is an integer number (43934280).

Almost surely, 2^117158078 is an apocalyptic number.

117158078 is a deficient number, since it is larger than the sum of its proper divisors (58579042).

117158078 is an equidigital number, since it uses as much as digits as its factorization.

117158078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58579041.

The product of its (nonzero) digits is 15680, while the sum is 38.

The square root of 117158078 is about 10823.9585180284. The cubic root of 117158078 is about 489.3174976788.

The spelling of 117158078 in words is "one hundred seventeen million, one hundred fifty-eight thousand, seventy-eight".