42056477 has 2 divisors, whose sum is σ = 42056478. Its totient is φ = 42056476.

The previous prime is 42056471. The next prime is 42056513. The reversal of 42056477 is 77465024.

42056477 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., 36132121 + 5924356 = 6011^2 + 2434^2 .

It is a cyclic number.

It is not a de Polignac number, because 42056477 - 2⁸ = 42056221 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42056471) 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, 21028238 + 21028239.

It is an arithmetic number, because the mean of its divisors is an integer number (21028239).

Almost surely, 2^42056477 is an apocalyptic number.

It is an amenable number.

42056477 is a deficient number, since it is larger than the sum of its proper divisors (1).

42056477 is an equidigital number, since it uses as much as digits as its factorization.

42056477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 42056477 is about 6485.0965297365. The cubic root of 42056477 is about 347.7584007013.

The spelling of 42056477 in words is "forty-two million, fifty-six thousand, four hundred seventy-seven".