42665371 has 8 divisors (see below), whose sum is σ = 49680864. Its totient is φ = 35880000.

The previous prime is 42665369. The next prime is 42665377. The reversal of 42665371 is 17356624.

It is a happy number.

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 42665371 - 2¹ = 42665369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42665377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57130 + ... + 57871.

It is an arithmetic number, because the mean of its divisors is an integer number (6210108).

Almost surely, 2^42665371 is an apocalyptic number.

42665371 is a deficient number, since it is larger than the sum of its proper divisors (7015493).

42665371 is a wasteful number, since it uses less digits than its factorization.

42665371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115061.

The product of its digits is 30240, while the sum is 34.

The square root of 42665371 is about 6531.8734678498. The cubic root of 42665371 is about 349.4286487678.

The spelling of 42665371 in words is "forty-two million, six hundred sixty-five thousand, three hundred seventy-one".