20042317 has 8 divisors (see below), whose sum is σ = 20664000. Its totient is φ = 19427040.

The previous prime is 20042299. The next prime is 20042327. The reversal of 20042317 is 71324002.

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-20042317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20042294 and 20042303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20042327) 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, 5184 + ... + 8182.

It is an arithmetic number, because the mean of its divisors is an integer number (2583000).

Almost surely, 2^20042317 is an apocalyptic number.

It is an amenable number.

20042317 is a deficient number, since it is larger than the sum of its proper divisors (621683).

20042317 is a wasteful number, since it uses less digits than its factorization.

20042317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3203.

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

The square root of 20042317 is about 4476.8646394547. The cubic root of 20042317 is about 271.6330701466.

Adding to 20042317 its reverse (71324002), we get a palindrome (91366319).

The spelling of 20042317 in words is "twenty million, forty-two thousand, three hundred seventeen".