42168217 has 8 divisors (see below), whose sum is σ = 51899456. Its totient is φ = 33363792.

The previous prime is 42168209. The next prime is 42168221. The reversal of 42168217 is 71286124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42168217 - 2³ = 42168209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42168257) 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, 231603 + ... + 231784.

It is an arithmetic number, because the mean of its divisors is an integer number (6487432).

Almost surely, 2^42168217 is an apocalyptic number.

It is an amenable number.

42168217 is a deficient number, since it is larger than the sum of its proper divisors (9731239).

42168217 is a wasteful number, since it uses less digits than its factorization.

42168217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463407.

The product of its digits is 5376, while the sum is 31.

The square root of 42168217 is about 6493.7059526899. The cubic root of 42168217 is about 348.0661151742.

The spelling of 42168217 in words is "forty-two million, one hundred sixty-eight thousand, two hundred seventeen".