9771242 has 12 divisors (see below), whose sum is σ = 15871590. Its totient is φ = 4509648.

The previous prime is 9771241. The next prime is 9771247. The reversal of 9771242 is 2421779.

It can be written as a sum of positive squares in 3 ways, for example, as 8231161 + 1540081 = 2869^2 + 1241^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9771199 and 9771208.

It is not an unprimeable number, because it can be changed into a prime (9771241) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 14117 + ... + 14792.

Almost surely, 2^9771242 is an apocalyptic number.

9771242 is a deficient number, since it is larger than the sum of its proper divisors (6100348).

9771242 is a wasteful number, since it uses less digits than its factorization.

9771242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28937 (or 28924 counting only the distinct ones).

The product of its digits is 7056, while the sum is 32.

The square root of 9771242 is about 3125.8985908055. The cubic root of 9771242 is about 213.7879665355.

The spelling of 9771242 in words is "nine million, seven hundred seventy-one thousand, two hundred forty-two".