42785017 has 16 divisors (see below), whose sum is σ = 50339520. Its totient is φ = 35942400.

The previous prime is 42785009. The next prime is 42785021. The reversal of 42785017 is 71058724.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42785017 - 2³ = 42785009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42785027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6073 + ... + 11065.

It is an arithmetic number, because the mean of its divisors is an integer number (3146220).

Almost surely, 2^42785017 is an apocalyptic number.

It is an amenable number.

42785017 is a deficient number, since it is larger than the sum of its proper divisors (7554503).

42785017 is a wasteful number, since it uses less digits than its factorization.

42785017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5064.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 42785017 is about 6541.0256840957. The cubic root of 42785017 is about 349.7549768069.

The spelling of 42785017 in words is "forty-two million, seven hundred eighty-five thousand, seventeen".