42878299 has 2 divisors, whose sum is σ = 42878300. Its totient is φ = 42878298.

The previous prime is 42878293. The next prime is 42878317. The reversal of 42878299 is 99287824.

42878299 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42878299 - 2²³ = 34489691 is a prime.

It is not a weakly prime, because it can be changed into another prime (42878293) 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, 21439149 + 21439150.

It is an arithmetic number, because the mean of its divisors is an integer number (21439150).

Almost surely, 2^42878299 is an apocalyptic number.

42878299 is a deficient number, since it is larger than the sum of its proper divisors (1).

42878299 is an equidigital number, since it uses as much as digits as its factorization.

42878299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 49.

The square root of 42878299 is about 6548.1523348193. The cubic root of 42878299 is about 350.0089766405.

The spelling of 42878299 in words is "forty-two million, eight hundred seventy-eight thousand, two hundred ninety-nine".