42783616 has 16 divisors (see below), whose sum is σ = 85233240. Its totient is φ = 21391744.

The previous prime is 42783589. The next prime is 42783619. The reversal of 42783616 is 61638724.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42783619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166996 + ... + 167251.

Almost surely, 2^42783616 is an apocalyptic number.

It is an amenable number.

42783616 is a deficient number, since it is larger than the sum of its proper divisors (42449624).

42783616 is an equidigital number, since it uses as much as digits as its factorization.

42783616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334261 (or 334249 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 42783616 is about 6540.9185899230. The cubic root of 42783616 is about 349.7511591770.

It can be divided in two parts, 4 and 2783616, that added together give a triangular number (2783620 = T₂₃₅₉).

The spelling of 42783616 in words is "forty-two million, seven hundred eighty-three thousand, six hundred sixteen".