8042117 has 4 divisors (see below), whose sum is σ = 8083980. Its totient is φ = 8000256.

The previous prime is 8042101. The next prime is 8042147. The reversal of 8042117 is 7112408.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1560001 + 6482116 = 1249^2 + 2546^2 .

It is a cyclic number.

It is not a de Polignac number, because 8042117 - 2⁴ = 8042101 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8042092 and 8042101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8042147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20642 + ... + 21027.

It is an arithmetic number, because the mean of its divisors is an integer number (2020995).

Almost surely, 2^8042117 is an apocalyptic number.

It is an amenable number.

8042117 is a deficient number, since it is larger than the sum of its proper divisors (41863).

8042117 is a wasteful number, since it uses less digits than its factorization.

8042117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41862.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 8042117 is about 2835.8626553485. The cubic root of 8042117 is about 200.3503608779.

The spelling of 8042117 in words is "eight million, forty-two thousand, one hundred seventeen".