42028787 has 2 divisors, whose sum is σ = 42028788. Its totient is φ = 42028786.

The previous prime is 42028771. The next prime is 42028849. The reversal of 42028787 is 78782024.

42028787 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 42028787 - 2⁴ = 42028771 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42028787.

It is not a weakly prime, because it can be changed into another prime (42028717) 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, 21014393 + 21014394.

It is an arithmetic number, because the mean of its divisors is an integer number (21014394).

Almost surely, 2^42028787 is an apocalyptic number.

42028787 is a deficient number, since it is larger than the sum of its proper divisors (1).

42028787 is an equidigital number, since it uses as much as digits as its factorization.

42028787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50176, while the sum is 38.

The square root of 42028787 is about 6482.9612832409. The cubic root of 42028787 is about 347.6820625253.

The spelling of 42028787 in words is "forty-two million, twenty-eight thousand, seven hundred eighty-seven".