42677785 has 8 divisors (see below), whose sum is σ = 51260616. Its totient is φ = 34110720.

The previous prime is 42677783. The next prime is 42677807. The reversal of 42677785 is 58777624.

It can be written as a sum of positive squares in 4 ways, for example, as 11641744 + 31036041 = 3412^2 + 5571^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42677785 - 2¹ = 42677783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42677783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3195 + ... + 9775.

It is an arithmetic number, because the mean of its divisors is an integer number (6407577).

Almost surely, 2^42677785 is an apocalyptic number.

It is an amenable number.

42677785 is a deficient number, since it is larger than the sum of its proper divisors (8582831).

42677785 is a wasteful number, since it uses less digits than its factorization.

42677785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7883.

The product of its digits is 658560, while the sum is 46.

The square root of 42677785 is about 6532.8236620928. The cubic root of 42677785 is about 349.4625356297.

The spelling of 42677785 in words is "forty-two million, six hundred seventy-seven thousand, seven hundred eighty-five".