820942 has 8 divisors (see below), whose sum is σ = 1271232. Its totient is φ = 397200.

The previous prime is 820927. The next prime is 820957. The reversal of 820942 is 249028.

820942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (820927) and next prime (820957).

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

It is a congruent number.

It is an unprimeable number.

820942 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6559 + ... + 6682.

It is an arithmetic number, because the mean of its divisors is an integer number (158904).

2⁸²⁰⁹⁴² is an apocalyptic number.

820942 is a deficient number, since it is larger than the sum of its proper divisors (450290).

820942 is a wasteful number, since it uses less digits than its factorization.

820942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13274.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 820942 is about 906.0584970078. The cubic root of 820942 is about 93.6348440900.

The spelling of 820942 in words is "eight hundred twenty thousand, nine hundred forty-two".