42584791 has 4 divisors (see below), whose sum is σ = 42621112. Its totient is φ = 42548472.

The previous prime is 42584783. The next prime is 42584807. The reversal of 42584791 is 19748524.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42584791 - 2³ = 42584783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42584701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16341 + ... + 18766.

It is an arithmetic number, because the mean of its divisors is an integer number (10655278).

Almost surely, 2^42584791 is an apocalyptic number.

42584791 is a deficient number, since it is larger than the sum of its proper divisors (36321).

42584791 is a wasteful number, since it uses less digits than its factorization.

42584791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36320.

The product of its digits is 80640, while the sum is 40.

The square root of 42584791 is about 6525.7023376798. The cubic root of 42584791 is about 349.2085271977.

It can be divided in two parts, 4258 and 4791, that multiplied together give a triangular number (20400078 = T₆₃₈₇).

The spelling of 42584791 in words is "forty-two million, five hundred eighty-four thousand, seven hundred ninety-one".