42661747 has 2 divisors, whose sum is σ = 42661748. Its totient is φ = 42661746.

The previous prime is 42661709. The next prime is 42661763. The reversal of 42661747 is 74716624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42661747 - 2¹¹ = 42659699 is a prime.

It is not a weakly prime, because it can be changed into another prime (42661147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21330873 + 21330874.

It is an arithmetic number, because the mean of its divisors is an integer number (21330874).

Almost surely, 2^42661747 is an apocalyptic number.

42661747 is a deficient number, since it is larger than the sum of its proper divisors (1).

42661747 is an equidigital number, since it uses as much as digits as its factorization.

42661747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 37.

The square root of 42661747 is about 6531.5960530333. The cubic root of 42661747 is about 349.4187549886.

The spelling of 42661747 in words is "forty-two million, six hundred sixty-one thousand, seven hundred forty-seven".