9957842 has 16 divisors (see below), whose sum is σ = 15240960. Its totient is φ = 4878672.

The previous prime is 9957769. The next prime is 9957863. The reversal of 9957842 is 2487599.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 9957793 and 9957802.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36884 + ... + 37152.

It is an arithmetic number, because the mean of its divisors is an integer number (952560).

Almost surely, 2^9957842 is an apocalyptic number.

9957842 is a deficient number, since it is larger than the sum of its proper divisors (5283118).

9957842 is a wasteful number, since it uses less digits than its factorization.

9957842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577.

The product of its digits is 181440, while the sum is 44.

The square root of 9957842 is about 3155.6048548575. The cubic root of 9957842 is about 215.1402870261.

The spelling of 9957842 in words is "nine million, nine hundred fifty-seven thousand, eight hundred forty-two".