9999242 has 16 divisors (see below), whose sum is σ = 16632864. Its totient is φ = 4470000.

The previous prime is 9999233. The next prime is 9999271. The reversal of 9999242 is 2429999.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9999193 and 9999202.

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, 2384 + ... + 5067.

It is an arithmetic number, because the mean of its divisors is an integer number (1039554).

Almost surely, 2^9999242 is an apocalyptic number.

9999242 is a deficient number, since it is larger than the sum of its proper divisors (6633622).

9999242 is a wasteful number, since it uses less digits than its factorization.

9999242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7525.

The product of its digits is 104976, while the sum is 44.

The square root of 9999242 is about 3162.1578075738. The cubic root of 9999242 is about 215.4380253273.

The spelling of 9999242 in words is "nine million, nine hundred ninety-nine thousand, two hundred forty-two".