42810457 has 2 divisors, whose sum is σ = 42810458. Its totient is φ = 42810456.

The previous prime is 42810421. The next prime is 42810461. The reversal of 42810457 is 75401824.

42810457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40908816 + 1901641 = 6396^2 + 1379^2 .

It is a cyclic number.

It is not a de Polignac number, because 42810457 - 2¹⁵ = 42777689 is a prime.

It is not a weakly prime, because it can be changed into another prime (42817457) 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, 21405228 + 21405229.

It is an arithmetic number, because the mean of its divisors is an integer number (21405229).

Almost surely, 2^42810457 is an apocalyptic number.

It is an amenable number.

42810457 is a deficient number, since it is larger than the sum of its proper divisors (1).

42810457 is an equidigital number, since it uses as much as digits as its factorization.

42810457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 42810457 is about 6542.9700442536. The cubic root of 42810457 is about 349.8242845870.

The spelling of 42810457 in words is "forty-two million, eight hundred ten thousand, four hundred fifty-seven".