42587771 has 4 divisors (see below), whose sum is σ = 45092952. Its totient is φ = 40082592.

The previous prime is 42587749. The next prime is 42587801. The reversal of 42587771 is 17778524.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42587771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42587711) 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, 1252565 + ... + 1252598.

It is an arithmetic number, because the mean of its divisors is an integer number (11273238).

Almost surely, 2^42587771 is an apocalyptic number.

42587771 is a deficient number, since it is larger than the sum of its proper divisors (2505181).

42587771 is a wasteful number, since it uses less digits than its factorization.

42587771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2505180.

The product of its digits is 109760, while the sum is 41.

The square root of 42587771 is about 6525.9306615992. The cubic root of 42587771 is about 349.2166726499.

The spelling of 42587771 in words is "forty-two million, five hundred eighty-seven thousand, seven hundred seventy-one".