42357271 has 4 divisors (see below), whose sum is σ = 46207944. Its totient is φ = 38506600.

The previous prime is 42357269. The next prime is 42357277. The reversal of 42357271 is 17275324.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42357271 - 2¹ = 42357269 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42357277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1925320 + ... + 1925341.

It is an arithmetic number, because the mean of its divisors is an integer number (11551986).

Almost surely, 2^42357271 is an apocalyptic number.

42357271 is a deficient number, since it is larger than the sum of its proper divisors (3850673).

42357271 is a wasteful number, since it uses less digits than its factorization.

42357271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3850672.

The product of its digits is 11760, while the sum is 31.

The square root of 42357271 is about 6508.2463843957. The cubic root of 42357271 is about 348.5855047441.

The spelling of 42357271 in words is "forty-two million, three hundred fifty-seven thousand, two hundred seventy-one".