42003217 has 8 divisors (see below), whose sum is σ = 43271360. Its totient is φ = 40748400.

The previous prime is 42003211. The next prime is 42003239. The reversal of 42003217 is 71230024.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42003217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42003194 and 42003203.

It is not an unprimeable number, because it can be changed into a prime (42003211) 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, 3259 + ... + 9727.

It is an arithmetic number, because the mean of its divisors is an integer number (5408920).

Almost surely, 2^42003217 is an apocalyptic number.

It is an amenable number.

42003217 is a deficient number, since it is larger than the sum of its proper divisors (1268143).

42003217 is a wasteful number, since it uses less digits than its factorization.

42003217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6663.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 42003217 is about 6480.9888905938. The cubic root of 42003217 is about 347.6115391650.

The spelling of 42003217 in words is "forty-two million, three thousand, two hundred seventeen".