42065271 has 8 divisors (see below), whose sum is σ = 62318960. Its totient is φ = 28043496.

The previous prime is 42065269. The next prime is 42065333. The reversal of 42065271 is 17256024.

42065271 is a `hidden beast` number, since 4 + 2 + 0 + 652 + 7 + 1 = 666.

It is not a de Polignac number, because 42065271 - 2¹ = 42065269 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1557973 = 42065271 / (4 + 2 + 0 + 6 + 5 + 2 + 7 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42065251) 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, 778960 + ... + 779013.

It is an arithmetic number, because the mean of its divisors is an integer number (7789870).

Almost surely, 2^42065271 is an apocalyptic number.

42065271 is a deficient number, since it is larger than the sum of its proper divisors (20253689).

42065271 is a wasteful number, since it uses less digits than its factorization.

42065271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557982 (or 1557976 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 42065271 is about 6485.7745104189. The cubic root of 42065271 is about 347.7826377468.

The spelling of 42065271 in words is "forty-two million, sixty-five thousand, two hundred seventy-one".