9915242 has 8 divisors (see below), whose sum is σ = 14938500. Its totient is φ = 4935744.

The previous prime is 9915229. The next prime is 9915281. The reversal of 9915242 is 2425199.

It can be written as a sum of positive squares in 2 ways, for example, as 9541921 + 373321 = 3089^2 + 611^2 .

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 = 9915199 and 9915208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10367 + ... + 11282.

Almost surely, 2^9915242 is an apocalyptic number.

9915242 is a deficient number, since it is larger than the sum of its proper divisors (5023258).

9915242 is a wasteful number, since it uses less digits than its factorization.

9915242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21880.

The product of its digits is 6480, while the sum is 32.

The square root of 9915242 is about 3148.8477257562. The cubic root of 9915242 is about 214.8330559098.

The spelling of 9915242 in words is "nine million, nine hundred fifteen thousand, two hundred forty-two".