823520942 has 16 divisors (see below), whose sum is σ = 1248965520. Its totient is φ = 407213568.

The previous prime is 823520909. The next prime is 823520989. The reversal of 823520942 is 249025328.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122513 + ... + 129059.

It is an arithmetic number, because the mean of its divisors is an integer number (78060345).

Almost surely, 2^823520942 is an apocalyptic number.

823520942 is a deficient number, since it is larger than the sum of its proper divisors (425444578).

823520942 is a wasteful number, since it uses less digits than its factorization.

823520942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7235.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 823520942 is about 28697.0545875356. The cubic root of 823520942 is about 937.3279108604.

The spelling of 823520942 in words is "eight hundred twenty-three million, five hundred twenty thousand, nine hundred forty-two".