802542 has 16 divisors (see below), whose sum is σ = 1728720. Its totient is φ = 246912.

The previous prime is 802531. The next prime is 802573. The reversal of 802542 is 245208.

It is a congruent number.

It is an unprimeable number.

802542 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 5067 + ... + 5222.

It is an arithmetic number, because the mean of its divisors is an integer number (108045).

2⁸⁰²⁵⁴² is an apocalyptic number.

802542 is an abundant number, since it is smaller than the sum of its proper divisors (926178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

802542 is a wasteful number, since it uses less digits than its factorization.

802542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10307.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 802542 is about 895.8470851658. The cubic root of 802542 is about 92.9299970373.

The spelling of 802542 in words is "eight hundred two thousand, five hundred forty-two".