42122473 has 2 divisors, whose sum is σ = 42122474. Its totient is φ = 42122472.

The previous prime is 42122461. The next prime is 42122497. The reversal of 42122473 is 37422124.

It is a happy number.

42122473 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., 27583504 + 14538969 = 5252^2 + 3813^2 .

It is a cyclic number.

It is not a de Polignac number, because 42122473 - 2²⁵ = 8568041 is a prime.

It is not a weakly prime, because it can be changed into another prime (42122573) 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, 21061236 + 21061237.

It is an arithmetic number, because the mean of its divisors is an integer number (21061237).

Almost surely, 2^42122473 is an apocalyptic number.

It is an amenable number.

42122473 is a deficient number, since it is larger than the sum of its proper divisors (1).

42122473 is an equidigital number, since it uses as much as digits as its factorization.

42122473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 25.

The square root of 42122473 is about 6490.1828171478. The cubic root of 42122473 is about 347.9402091535.

Adding to 42122473 its reverse (37422124), we get a palindrome (79544597).

The spelling of 42122473 in words is "forty-two million, one hundred twenty-two thousand, four hundred seventy-three".