42663879 has 12 divisors (see below), whose sum is σ = 61698000. Its totient is φ = 28409184.

The previous prime is 42663877. The next prime is 42663899. The reversal of 42663879 is 97836624.

42663879 is a `hidden beast` number, since 4 + 2 + 6 + 638 + 7 + 9 = 666.

It is not a de Polignac number, because 42663879 - 2¹ = 42663877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42663877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7182 + ... + 11700.

It is an arithmetic number, because the mean of its divisors is an integer number (5141500).

Almost surely, 2^42663879 is an apocalyptic number.

42663879 is a deficient number, since it is larger than the sum of its proper divisors (19034121).

42663879 is a wasteful number, since it uses less digits than its factorization.

42663879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5574 (or 5571 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 42663879 is about 6531.7592576579. The cubic root of 42663879 is about 349.4245755690.

The spelling of 42663879 in words is "forty-two million, six hundred sixty-three thousand, eight hundred seventy-nine".