117042847 has 4 divisors (see below), whose sum is σ = 117068776. Its totient is φ = 117016920.

The previous prime is 117042839. The next prime is 117042851. The reversal of 117042847 is 748240711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 748240711 = 89 ⋅8407199.

It is a cyclic number.

It is not a de Polignac number, because 117042847 - 2³ = 117042839 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 (117042647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4233 + ... + 15874.

It is an arithmetic number, because the mean of its divisors is an integer number (29267194).

Almost surely, 2^117042847 is an apocalyptic number.

117042847 is a deficient number, since it is larger than the sum of its proper divisors (25929).

117042847 is an equidigital number, since it uses as much as digits as its factorization.

117042847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25928.

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 117042847 is about 10818.6342483698. The cubic root of 117042847 is about 489.1570220737.

The spelling of 117042847 in words is "one hundred seventeen million, forty-two thousand, eight hundred forty-seven".