42571661 has 8 divisors (see below), whose sum is σ = 46616448. Its totient is φ = 38556000.

The previous prime is 42571631. The next prime is 42571679. The reversal of 42571661 is 16617524.

42571661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42571661 is a prime.

It is a super-3 number, since 3×42571661³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42571631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4160 + ... + 10121.

It is an arithmetic number, because the mean of its divisors is an integer number (5827056).

Almost surely, 2^42571661 is an apocalyptic number.

It is an amenable number.

42571661 is a deficient number, since it is larger than the sum of its proper divisors (4044787).

42571661 is a wasteful number, since it uses less digits than its factorization.

42571661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14563.

The product of its digits is 10080, while the sum is 32.

The square root of 42571661 is about 6524.6962381401. The cubic root of 42571661 is about 349.1726334809.

The spelling of 42571661 in words is "forty-two million, five hundred seventy-one thousand, six hundred sixty-one".