42799191 has 8 divisors (see below), whose sum is σ = 60069120. Its totient is φ = 27031032.

The previous prime is 42799171. The next prime is 42799193. The reversal of 42799191 is 19199724.

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

It is not a de Polignac number, because 42799191 - 2⁷ = 42799063 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42799193) 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 7 ways as a sum of consecutive naturals, for example, 375375 + ... + 375488.

It is an arithmetic number, because the mean of its divisors is an integer number (7508640).

Almost surely, 2^42799191 is an apocalyptic number.

42799191 is a deficient number, since it is larger than the sum of its proper divisors (17269929).

42799191 is a wasteful number, since it uses less digits than its factorization.

42799191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750885.

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

The square root of 42799191 is about 6542.1090635972. The cubic root of 42799191 is about 349.7935953082.

The spelling of 42799191 in words is "forty-two million, seven hundred ninety-nine thousand, one hundred ninety-one".