42779242 has 32 divisors (see below), whose sum is σ = 74882880. Its totient is φ = 18113280.

The previous prime is 42779227. The next prime is 42779249. The reversal of 42779242 is 24297724.

It is not an unprimeable number, because it can be changed into a prime (42779249) 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, 39484 + ... + 40552.

It is an arithmetic number, because the mean of its divisors is an integer number (2340090).

Almost surely, 2^42779242 is an apocalyptic number.

42779242 is a deficient number, since it is larger than the sum of its proper divisors (32103638).

42779242 is a wasteful number, since it uses less digits than its factorization.

42779242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206.

The product of its digits is 56448, while the sum is 37.

The square root of 42779242 is about 6540.5842246698. The cubic root of 42779242 is about 349.7392397879.

The spelling of 42779242 in words is "forty-two million, seven hundred seventy-nine thousand, two hundred forty-two".