42385777 has 16 divisors (see below), whose sum is σ = 52168320. Its totient is φ = 33608448.

The previous prime is 42385747. The next prime is 42385781. The reversal of 42385777 is 77758324.

It is a cyclic number.

It is not a de Polignac number, because 42385777 - 2¹⁵ = 42353009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42385747) 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 in 15 ways as a sum of consecutive naturals, for example, 4003 + ... + 10039.

It is an arithmetic number, because the mean of its divisors is an integer number (3260520).

Almost surely, 2^42385777 is an apocalyptic number.

It is an amenable number.

42385777 is a deficient number, since it is larger than the sum of its proper divisors (9782543).

42385777 is a wasteful number, since it uses less digits than its factorization.

42385777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6120.

The product of its digits is 329280, while the sum is 43.

The square root of 42385777 is about 6510.4360069046. The cubic root of 42385777 is about 348.6636853404.

The spelling of 42385777 in words is "forty-two million, three hundred eighty-five thousand, seven hundred seventy-seven".