42017747 has 2 divisors, whose sum is σ = 42017748. Its totient is φ = 42017746.

The previous prime is 42017707. The next prime is 42017749. The reversal of 42017747 is 74771024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42017747 - 2¹² = 42013651 is a prime.

Together with 42017749, 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 (42017749) 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, 21008873 + 21008874.

It is an arithmetic number, because the mean of its divisors is an integer number (21008874).

Almost surely, 2^42017747 is an apocalyptic number.

42017747 is a deficient number, since it is larger than the sum of its proper divisors (1).

42017747 is an equidigital number, since it uses as much as digits as its factorization.

42017747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10976, while the sum is 32.

The square root of 42017747 is about 6482.1097645751. The cubic root of 42017747 is about 347.6516171538.

The spelling of 42017747 in words is "forty-two million, seventeen thousand, seven hundred forty-seven".