42356791 has 8 divisors (see below), whose sum is σ = 44312400. Its totient is φ = 40434240.

The previous prime is 42356771. The next prime is 42356827. The reversal of 42356791 is 19765324.

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

It is a cyclic number.

It is not a de Polignac number, because 42356791 - 2⁵ = 42356759 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42356791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42356771) 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, 5625 + ... + 10786.

It is an arithmetic number, because the mean of its divisors is an integer number (5539050).

Almost surely, 2^42356791 is an apocalyptic number.

42356791 is a deficient number, since it is larger than the sum of its proper divisors (1955609).

42356791 is a wasteful number, since it uses less digits than its factorization.

42356791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16529.

The product of its digits is 45360, while the sum is 37.

The square root of 42356791 is about 6508.2095079983. The cubic root of 42356791 is about 348.5841879951.

It can be divided in two parts, 4235 and 6791, that added together give a triangular number (11026 = T₁₄₈).

The spelling of 42356791 in words is "forty-two million, three hundred fifty-six thousand, seven hundred ninety-one".