822542 has 16 divisors (see below), whose sum is σ = 1445472. Its totient is φ = 343680.

The previous prime is 822541. The next prime is 822551. The reversal of 822542 is 245228.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822541) 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, 143 + ... + 1290.

It is an arithmetic number, because the mean of its divisors is an integer number (90342).

2⁸²²⁵⁴² is an apocalyptic number.

822542 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

822542 is a deficient number, since it is larger than the sum of its proper divisors (622930).

822542 is a wasteful number, since it uses less digits than its factorization.

822542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483.

The product of its digits is 1280, while the sum is 23.

The square root of 822542 is about 906.9410124148. The cubic root of 822542 is about 93.6956354437.

The spelling of 822542 in words is "eight hundred twenty-two thousand, five hundred forty-two".