42913779 has 8 divisors (see below), whose sum is σ = 57279120. Its totient is φ = 28578816.

The previous prime is 42913777. The next prime is 42913781. The reversal of 42913779 is 97731924.

It is an interprime number because it is at equal distance from previous prime (42913777) and next prime (42913781).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42913779 - 2¹ = 42913777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42913779.

It is not an unprimeable number, because it can be changed into a prime (42913771) 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 7 ways as a sum of consecutive naturals, for example, 4062 + ... + 10115.

It is an arithmetic number, because the mean of its divisors is an integer number (7159890).

Almost surely, 2^42913779 is an apocalyptic number.

42913779 is a deficient number, since it is larger than the sum of its proper divisors (14365341).

42913779 is a wasteful number, since it uses less digits than its factorization.

42913779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15189.

The product of its digits is 95256, while the sum is 42.

The square root of 42913779 is about 6550.8609357855. The cubic root of 42913779 is about 350.1054892910.

The spelling of 42913779 in words is "forty-two million, nine hundred thirteen thousand, seven hundred seventy-nine".