42783644 has 12 divisors (see below), whose sum is σ = 75411000. Its totient is φ = 21237648.

The previous prime is 42783641. The next prime is 42783647. The reversal of 42783644 is 44638724.

42783644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42783641) and next prime (42783647).

It is a junction number, because it is equal to n+sod(n) for n = 42783598 and 42783607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42783641) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 37919 + ... + 39030.

It is an arithmetic number, because the mean of its divisors is an integer number (6284250).

Almost surely, 2^42783644 is an apocalyptic number.

It is an amenable number.

42783644 is a deficient number, since it is larger than the sum of its proper divisors (32627356).

42783644 is a wasteful number, since it uses less digits than its factorization.

42783644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77092 (or 77090 counting only the distinct ones).

The product of its digits is 129024, while the sum is 38.

The square root of 42783644 is about 6540.9207302948. The cubic root of 42783644 is about 349.7512354760.

The spelling of 42783644 in words is "forty-two million, seven hundred eighty-three thousand, six hundred forty-four".