42785469 has 32 divisors (see below), whose sum is σ = 66873600. Its totient is φ = 26994240.

The previous prime is 42785467. The next prime is 42785489. The reversal of 42785469 is 96458724.

It is a happy number.

It is not a de Polignac number, because 42785469 - 2¹ = 42785467 is a prime.

It is a super-4 number, since 4×42785469⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42785467) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40984 + ... + 42014.

It is an arithmetic number, because the mean of its divisors is an integer number (2089800).

Almost surely, 2^42785469 is an apocalyptic number.

It is an amenable number.

42785469 is a deficient number, since it is larger than the sum of its proper divisors (24088131).

42785469 is a wasteful number, since it uses less digits than its factorization.

42785469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122 (or 1116 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 42785469 is about 6541.0602351607. The cubic root of 42785469 is about 349.7562084584.

The spelling of 42785469 in words is "forty-two million, seven hundred eighty-five thousand, four hundred sixty-nine".