42919791 has 8 divisors (see below), whose sum is σ = 57782400. Its totient is φ = 28335192.

The previous prime is 42919753. The next prime is 42919813. The reversal of 42919791 is 19791924.

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

It is not a de Polignac number, because 42919791 - 2¹⁰ = 42918767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42919711) 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, 69141 + ... + 69758.

It is an arithmetic number, because the mean of its divisors is an integer number (7222800).

Almost surely, 2^42919791 is an apocalyptic number.

42919791 is a deficient number, since it is larger than the sum of its proper divisors (14862609).

42919791 is a wasteful number, since it uses less digits than its factorization.

42919791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139005.

The product of its digits is 40824, while the sum is 42.

The square root of 42919791 is about 6551.3197906987. The cubic root of 42919791 is about 350.1218378544.

The spelling of 42919791 in words is "forty-two million, nine hundred nineteen thousand, seven hundred ninety-one".