42782713 has 4 divisors (see below), whose sum is σ = 43589988. Its totient is φ = 41975440.

The previous prime is 42782711. The next prime is 42782717. The reversal of 42782713 is 31728724.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35557369 + 7225344 = 5963^2 + 2688^2 .

It is a cyclic number.

It is not a de Polignac number, because 42782713 - 2¹ = 42782711 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42782711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403558 + ... + 403663.

It is an arithmetic number, because the mean of its divisors is an integer number (10897497).

Almost surely, 2^42782713 is an apocalyptic number.

It is an amenable number.

42782713 is a deficient number, since it is larger than the sum of its proper divisors (807275).

42782713 is an equidigital number, since it uses as much as digits as its factorization.

42782713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807274.

The product of its digits is 18816, while the sum is 34.

The square root of 42782713 is about 6540.8495625568. The cubic root of 42782713 is about 349.7486985192.

The spelling of 42782713 in words is "forty-two million, seven hundred eighty-two thousand, seven hundred thirteen".