42257271 has 16 divisors (see below), whose sum is σ = 65608704. Its totient is φ = 23690784.

The previous prime is 42257249. The next prime is 42257297. The reversal of 42257271 is 17275224.

It is not a de Polignac number, because 42257271 - 2¹¹ = 42255223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42257221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17871 + ... + 20096.

It is an arithmetic number, because the mean of its divisors is an integer number (4100544).

Almost surely, 2^42257271 is an apocalyptic number.

42257271 is a deficient number, since it is larger than the sum of its proper divisors (23351433).

42257271 is a wasteful number, since it uses less digits than its factorization.

42257271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38030.

The product of its digits is 7840, while the sum is 30.

The square root of 42257271 is about 6500.5592836309. The cubic root of 42257271 is about 348.3109669229.

The spelling of 42257271 in words is "forty-two million, two hundred fifty-seven thousand, two hundred seventy-one".