42175281 has 4 divisors (see below), whose sum is σ = 56233712. Its totient is φ = 28116852.

The previous prime is 42175271. The next prime is 42175327. The reversal of 42175281 is 18257124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42175281 - 2¹⁰ = 42174257 is a prime.

It is a super-2 number, since 2×42175281² = 3557508654857922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42175201) 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, 7029211 + ... + 7029216.

It is an arithmetic number, because the mean of its divisors is an integer number (14058428).

Almost surely, 2^42175281 is an apocalyptic number.

It is an amenable number.

42175281 is a deficient number, since it is larger than the sum of its proper divisors (14058431).

42175281 is a wasteful number, since it uses less digits than its factorization.

42175281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14058430.

The product of its digits is 4480, while the sum is 30.

The square root of 42175281 is about 6494.2498412057. The cubic root of 42175281 is about 348.0855500466.

The spelling of 42175281 in words is "forty-two million, one hundred seventy-five thousand, two hundred eighty-one".