800542 has 8 divisors (see below), whose sum is σ = 1204632. Its totient is φ = 399000.

The previous prime is 800539. The next prime is 800549. The reversal of 800542 is 245008.

It is a happy number.

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

800542 is a modest number, since divided by 542 gives 8 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 792 + ... + 1492.

It is an arithmetic number, because the mean of its divisors is an integer number (150579).

2⁸⁰⁰⁵⁴² is an apocalyptic number.

800542 is a deficient number, since it is larger than the sum of its proper divisors (404090).

800542 is a wasteful number, since it uses less digits than its factorization.

800542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 800542 is about 894.7301269098. The cubic root of 800542 is about 92.8527364491.

The spelling of 800542 in words is "eight hundred thousand, five hundred forty-two".