42290473 has 2 divisors, whose sum is σ = 42290474. Its totient is φ = 42290472.

The previous prime is 42290471. The next prime is 42290489. The reversal of 42290473 is 37409224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40857664 + 1432809 = 6392^2 + 1197^2 .

It is a cyclic number.

It is not a de Polignac number, because 42290473 - 2¹ = 42290471 is a prime.

Together with 42290471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42290471) 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, 21145236 + 21145237.

It is an arithmetic number, because the mean of its divisors is an integer number (21145237).

Almost surely, 2^42290473 is an apocalyptic number.

It is an amenable number.

42290473 is a deficient number, since it is larger than the sum of its proper divisors (1).

42290473 is an equidigital number, since it uses as much as digits as its factorization.

42290473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 42290473 is about 6503.1125624581. The cubic root of 42290473 is about 348.4021669535.

Adding to 42290473 its reverse (37409224), we get a palindrome (79699697).

The spelling of 42290473 in words is "forty-two million, two hundred ninety thousand, four hundred seventy-three".