42485777 has 2 divisors, whose sum is σ = 42485778. Its totient is φ = 42485776.

The previous prime is 42485759. The next prime is 42485801. The reversal of 42485777 is 77758424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40500496 + 1985281 = 6364^2 + 1409^2 .

It is a cyclic number.

It is not a de Polignac number, because 42485777 - 2²⁴ = 25708561 is a prime.

It is not a weakly prime, because it can be changed into another prime (42485977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21242888 + 21242889.

It is an arithmetic number, because the mean of its divisors is an integer number (21242889).

Almost surely, 2^42485777 is an apocalyptic number.

It is an amenable number.

42485777 is a deficient number, since it is larger than the sum of its proper divisors (1).

42485777 is an equidigital number, since it uses as much as digits as its factorization.

42485777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 439040, while the sum is 44.

The square root of 42485777 is about 6518.1114596177. Note that the first 3 decimals coincide. The cubic root of 42485777 is about 348.9376686356.

The spelling of 42485777 in words is "forty-two million, four hundred eighty-five thousand, seven hundred seventy-seven".