42287807 has 2 divisors, whose sum is σ = 42287808. Its totient is φ = 42287806.

The previous prime is 42287779. The next prime is 42287809. The reversal of 42287807 is 70878224.

42287807 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42287807 - 2⁶ = 42287743 is a prime.

Together with 42287809, it forms a pair of twin primes.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 42287807 parts by 9196 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42287809) 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, 21143903 + 21143904.

It is an arithmetic number, because the mean of its divisors is an integer number (21143904).

Almost surely, 2^42287807 is an apocalyptic number.

42287807 is a deficient number, since it is larger than the sum of its proper divisors (1).

42287807 is an equidigital number, since it uses as much as digits as its factorization.

42287807 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 42287807 is about 6502.9075804597. The cubic root of 42287807 is about 348.3948456852.

The spelling of 42287807 in words is "forty-two million, two hundred eighty-seven thousand, eight hundred seven".