42775307 has 2 divisors, whose sum is σ = 42775308. Its totient is φ = 42775306.

The previous prime is 42775303. The next prime is 42775309. The reversal of 42775307 is 70357724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42775307 - 2² = 42775303 is a prime.

Together with 42775309, 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 (42775303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21387653 + 21387654.

It is an arithmetic number, because the mean of its divisors is an integer number (21387654).

Almost surely, 2^42775307 is an apocalyptic number.

42775307 is a deficient number, since it is larger than the sum of its proper divisors (1).

42775307 is an equidigital number, since it uses as much as digits as its factorization.

42775307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41160, while the sum is 35.

The square root of 42775307 is about 6540.2834036454. The cubic root of 42775307 is about 349.7285160035.

The spelling of 42775307 in words is "forty-two million, seven hundred seventy-five thousand, three hundred seven".