42082779 has 16 divisors (see below), whose sum is σ = 58475520. Its totient is φ = 26890080.

The previous prime is 42082763. The next prime is 42082783. The reversal of 42082779 is 97728024.

It is not a de Polignac number, because 42082779 - 2⁴ = 42082763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42082679) 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 15 ways as a sum of consecutive naturals, for example, 7837 + ... + 12065.

It is an arithmetic number, because the mean of its divisors is an integer number (3654720).

Almost surely, 2^42082779 is an apocalyptic number.

42082779 is a deficient number, since it is larger than the sum of its proper divisors (16392741).

42082779 is a wasteful number, since it uses less digits than its factorization.

42082779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4370.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 42082779 is about 6487.1240931556. The cubic root of 42082779 is about 347.8308812956.

The spelling of 42082779 in words is "forty-two million, eighty-two thousand, seven hundred seventy-nine".