42441779 has 2 divisors, whose sum is σ = 42441780. Its totient is φ = 42441778.

The previous prime is 42441757. The next prime is 42441781. The reversal of 42441779 is 97714424.

42441779 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 42441779 - 2⁸ = 42441523 is a prime.

Together with 42441781, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42441719) 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, 21220889 + 21220890.

It is an arithmetic number, because the mean of its divisors is an integer number (21220890).

Almost surely, 2^42441779 is an apocalyptic number.

42441779 is a deficient number, since it is larger than the sum of its proper divisors (1).

42441779 is an equidigital number, since it uses as much as digits as its factorization.

42441779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 38.

The square root of 42441779 is about 6514.7355280165. The cubic root of 42441779 is about 348.8171744894.

The spelling of 42441779 in words is "forty-two million, four hundred forty-one thousand, seven hundred seventy-nine".