42785899 has 12 divisors (see below), whose sum is σ = 46518600. Its totient is φ = 39334464.

The previous prime is 42785887. The next prime is 42785909. The reversal of 42785899 is 99858724.

It is a de Polignac number, because none of the positive numbers 2^k-42785899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42785299) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68812 + ... + 69430.

It is an arithmetic number, because the mean of its divisors is an integer number (3876550).

Almost surely, 2^42785899 is an apocalyptic number.

42785899 is a deficient number, since it is larger than the sum of its proper divisors (3732701).

42785899 is a wasteful number, since it uses less digits than its factorization.

42785899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054 (or 1041 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 52.

The square root of 42785899 is about 6541.0931043672. The cubic root of 42785899 is about 349.7573801542.

The spelling of 42785899 in words is "forty-two million, seven hundred eighty-five thousand, eight hundred ninety-nine".