42248887 has 2 divisors, whose sum is σ = 42248888. Its totient is φ = 42248886.

The previous prime is 42248879. The next prime is 42248917. The reversal of 42248887 is 78884224.

42248887 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 42248887 - 2³ = 42248879 is a prime.

It is a super-4 number, since 4×42248887⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42248827) 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, 21124443 + 21124444.

It is an arithmetic number, because the mean of its divisors is an integer number (21124444).

Almost surely, 2^42248887 is an apocalyptic number.

42248887 is a deficient number, since it is larger than the sum of its proper divisors (1).

42248887 is an equidigital number, since it uses as much as digits as its factorization.

42248887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 229376, while the sum is 43.

The square root of 42248887 is about 6499.9143840515. The cubic root of 42248887 is about 348.2879300014.

The spelling of 42248887 in words is "forty-two million, two hundred forty-eight thousand, eight hundred eighty-seven".