42288787 has 2 divisors, whose sum is σ = 42288788. Its totient is φ = 42288786.

The previous prime is 42288773. The next prime is 42288803. The reversal of 42288787 is 78788224.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42288787 is a prime.

It is not a weakly prime, because it can be changed into another prime (42288487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21144393 + 21144394.

It is an arithmetic number, because the mean of its divisors is an integer number (21144394).

Almost surely, 2^42288787 is an apocalyptic number.

42288787 is a deficient number, since it is larger than the sum of its proper divisors (1).

42288787 is an equidigital number, since it uses as much as digits as its factorization.

42288787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 401408, while the sum is 46.

The square root of 42288787 is about 6502.9829309325. The cubic root of 42288787 is about 348.3975369599.

The spelling of 42288787 in words is "forty-two million, two hundred eighty-eight thousand, seven hundred eighty-seven".