13878043 has 2 divisors, whose sum is σ = 13878044. Its totient is φ = 13878042.

The previous prime is 13878031. The next prime is 13878047. The reversal of 13878043 is 34087831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13878043 - 2⁹ = 13877531 is a prime.

It is not a weakly prime, because it can be changed into another prime (13878047) 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 as a sum of consecutive naturals, namely, 6939021 + 6939022.

It is an arithmetic number, because the mean of its divisors is an integer number (6939022).

Almost surely, 2^13878043 is an apocalyptic number.

13878043 is a deficient number, since it is larger than the sum of its proper divisors (1).

13878043 is an equidigital number, since it uses as much as digits as its factorization.

13878043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 13878043 is about 3725.3245496198. The cubic root of 13878043 is about 240.3123421761.

The spelling of 13878043 in words is "thirteen million, eight hundred seventy-eight thousand, forty-three".