42778083 has 8 divisors (see below), whose sum is σ = 57353296. Its totient is φ = 28360800.

The previous prime is 42778061. The next prime is 42778097. The reversal of 42778083 is 38087724.

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

It is not a de Polignac number, because 42778083 - 2⁵ = 42778051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42778003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38848 + ... + 39933.

It is an arithmetic number, because the mean of its divisors is an integer number (7169162).

Almost surely, 2^42778083 is an apocalyptic number.

42778083 is a deficient number, since it is larger than the sum of its proper divisors (14575213).

42778083 is a wasteful number, since it uses less digits than its factorization.

42778083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78965.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 42778083 is about 6540.4956234218. The cubic root of 42778083 is about 349.7360813133.

The spelling of 42778083 in words is "forty-two million, seven hundred seventy-eight thousand, eighty-three".