9724842 has 12 divisors (see below), whose sum is σ = 21070530. Its totient is φ = 3241608.

The previous prime is 9724823. The next prime is 9724843. The reversal of 9724842 is 2484279.

It can be written as a sum of positive squares in only one way, i.e., 9054081 + 670761 = 3009^2 + 819^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9724797 and 9724806.

It is not an unprimeable number, because it can be changed into a prime (9724843) 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, 270117 + ... + 270152.

Almost surely, 2^9724842 is an apocalyptic number.

9724842 is an abundant number, since it is smaller than the sum of its proper divisors (11345688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9724842 is a wasteful number, since it uses less digits than its factorization.

9724842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540277 (or 540274 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 9724842 is about 3118.4678930526. The cubic root of 9724842 is about 213.4490295830.

The spelling of 9724842 in words is "nine million, seven hundred twenty-four thousand, eight hundred forty-two".