42744785 has 8 divisors (see below), whose sum is σ = 51996840. Its totient is φ = 33727104.

The previous prime is 42744763. The next prime is 42744799. The reversal of 42744785 is 58744724.

It is a happy number.

42744785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2193361 + 40551424 = 1481^2 + 6368^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 42744785 - 2⁶ = 42744721 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58190 + ... + 58919.

It is an arithmetic number, because the mean of its divisors is an integer number (6499605).

Almost surely, 2^42744785 is an apocalyptic number.

It is an amenable number.

42744785 is a deficient number, since it is larger than the sum of its proper divisors (9252055).

42744785 is a wasteful number, since it uses less digits than its factorization.

42744785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117187.

The product of its digits is 250880, while the sum is 41.

The square root of 42744785 is about 6537.9496021306. The cubic root of 42744785 is about 349.6453141564.

The spelling of 42744785 in words is "forty-two million, seven hundred forty-four thousand, seven hundred eighty-five".