42307 has 2 divisors, whose sum is σ = 42308. Its totient is φ = 42306.

The previous prime is 42299. The next prime is 42323. The reversal of 42307 is 70324.

42307 is an esthetic number in base 5, because in such base its adjacent digits differ by 1.

It is an a-pointer prime, because the next prime (42323) can be obtained adding 42307 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42307 - 2³ = 42299 is a prime.

It is a plaindrome in base 14.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (42337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21153 + 21154.

It is an arithmetic number, because the mean of its divisors is an integer number (21154).

2⁴²³⁰⁷ is an apocalyptic number.

42307 is a deficient number, since it is larger than the sum of its proper divisors (1).

42307 is an equidigital number, since it uses as much as digits as its factorization.

42307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 42307 is about 205.6866548904. The cubic root of 42307 is about 34.8447545911.

The spelling of 42307 in words is "forty-two thousand, three hundred seven", and thus it is an iban number.