9920842 has 8 divisors (see below), whose sum is σ = 15394500. Its totient is φ = 4789344.

The previous prime is 9920821. The next prime is 9920861. The reversal of 9920842 is 2480299.

It can be written as a sum of positive squares in 2 ways, for example, as 9054081 + 866761 = 3009^2 + 931^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 9920798 and 9920807.

It is an unprimeable number.

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, 85467 + ... + 85582.

Almost surely, 2^9920842 is an apocalyptic number.

9920842 is a deficient number, since it is larger than the sum of its proper divisors (5473658).

9920842 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 13 representation: 9920842 = (2094829)₁₃.

9920842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171080.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 9920842 is about 3149.7368144021. The cubic root of 9920842 is about 214.8734932719.

The spelling of 9920842 in words is "nine million, nine hundred twenty thousand, eight hundred forty-two".