42308473 has 2 divisors, whose sum is σ = 42308474. Its totient is φ = 42308472.

The previous prime is 42308471. The next prime is 42308479. The reversal of 42308473 is 37480324.

It is a happy number.

42308473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42146064 + 162409 = 6492^2 + 403^2 .

It is a cyclic number.

It is not a de Polignac number, because 42308473 - 2¹ = 42308471 is a prime.

Together with 42308471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42308471) 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, 21154236 + 21154237.

It is an arithmetic number, because the mean of its divisors is an integer number (21154237).

Almost surely, 2^42308473 is an apocalyptic number.

It is an amenable number.

42308473 is a deficient number, since it is larger than the sum of its proper divisors (1).

42308473 is an equidigital number, since it uses as much as digits as its factorization.

42308473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 42308473 is about 6504.4963678981. The cubic root of 42308473 is about 348.4515898222.

Adding to 42308473 its reverse (37480324), we get a palindrome (79788797).

The spelling of 42308473 in words is "forty-two million, three hundred eight thousand, four hundred seventy-three".