878242147 has 4 divisors (see below), whose sum is σ = 878479056. Its totient is φ = 878005240.

The previous prime is 878242133. The next prime is 878242153. The reversal of 878242147 is 741242878.

878242147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 741242878 = 2 ⋅370621439.

It is a cyclic number.

It is not a de Polignac number, because 878242147 - 2²³ = 869853539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (878242247) 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, 112804 + ... + 120337.

It is an arithmetic number, because the mean of its divisors is an integer number (219619764).

Almost surely, 2^878242147 is an apocalyptic number.

878242147 is a deficient number, since it is larger than the sum of its proper divisors (236909).

878242147 is a wasteful number, since it uses less digits than its factorization.

878242147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236908.

The product of its digits is 200704, while the sum is 43.

The square root of 878242147 is about 29635.1505310839. The cubic root of 878242147 is about 957.6454694257.

The spelling of 878242147 in words is "eight hundred seventy-eight million, two hundred forty-two thousand, one hundred forty-seven".