42785583 has 24 divisors (see below), whose sum is σ = 61670160. Its totient is φ = 26373120.

The previous prime is 42785581. The next prime is 42785621. The reversal of 42785583 is 38558724.

It is not a de Polignac number, because 42785583 - 2¹ = 42785581 is a prime.

It is a super-2 number, since 2×42785583² = 3661212225299778, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42785581) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52483 + ... + 53291.

It is an arithmetic number, because the mean of its divisors is an integer number (2569590).

Almost surely, 2^42785583 is an apocalyptic number.

42785583 is a deficient number, since it is larger than the sum of its proper divisors (18884577).

42785583 is a wasteful number, since it uses less digits than its factorization.

42785583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907 (or 890 counting only the distinct ones).

The product of its digits is 268800, while the sum is 42.

The square root of 42785583 is about 6541.0689493385. The cubic root of 42785583 is about 349.7565190948.

The spelling of 42785583 in words is "forty-two million, seven hundred eighty-five thousand, five hundred eighty-three".