42782747 has 4 divisors (see below), whose sum is σ = 48894576. Its totient is φ = 36670920.

The previous prime is 42782741. The next prime is 42782749. The reversal of 42782747 is 74728724.

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

It is a cyclic number.

It is not a de Polignac number, because 42782747 - 2⁸ = 42782491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42782741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3055904 + ... + 3055917.

It is an arithmetic number, because the mean of its divisors is an integer number (12223644).

Almost surely, 2^42782747 is an apocalyptic number.

42782747 is a deficient number, since it is larger than the sum of its proper divisors (6111829).

42782747 is an equidigital number, since it uses as much as digits as its factorization.

42782747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6111828.

The product of its digits is 175616, while the sum is 41.

The square root of 42782747 is about 6540.8521616071. The cubic root of 42782747 is about 349.7487911692.

The spelling of 42782747 in words is "forty-two million, seven hundred eighty-two thousand, seven hundred forty-seven".