42803 has 4 divisors (see below), whose sum is σ = 44688. Its totient is φ = 40920.

The previous prime is 42797. The next prime is 42821. The reversal of 42803 is 30824.

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

It is a cyclic number.

It is not a de Polignac number, because 42803 - 2⁴ = 42787 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (42853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 908 + ... + 953.

It is an arithmetic number, because the mean of its divisors is an integer number (11172).

2⁴²⁸⁰³ is an apocalyptic number.

42803 is a deficient number, since it is larger than the sum of its proper divisors (1885).

42803 is a wasteful number, since it uses less digits than its factorization.

42803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 42803 is about 206.8888590524. Note that the first 4 decimals coincide. The cubic root of 42803 is about 34.9803971862.

The spelling of 42803 in words is "forty-two thousand, eight hundred three".