42662661 has 8 divisors (see below), whose sum is σ = 57002304. Its totient is φ = 28382400.

The previous prime is 42662651. The next prime is 42662671. The reversal of 42662661 is 16626624.

42662661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42662651) and next prime (42662671).

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

It is not a de Polignac number, because 42662661 - 2⁶ = 42662597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42662611) 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, 13140 + ... + 16061.

It is an arithmetic number, because the mean of its divisors is an integer number (7125288).

Almost surely, 2^42662661 is an apocalyptic number.

It is an amenable number.

42662661 is a deficient number, since it is larger than the sum of its proper divisors (14339643).

42662661 is a wasteful number, since it uses less digits than its factorization.

42662661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29691.

The product of its digits is 20736, while the sum is 33.

The square root of 42662661 is about 6531.6660202432. Note that the first 3 decimals coincide. The cubic root of 42662661 is about 349.4212503268.

The spelling of 42662661 in words is "forty-two million, six hundred sixty-two thousand, six hundred sixty-one".