9840552842 has 4 divisors (see below), whose sum is σ = 14760829266. Its totient is φ = 4920276420.

The previous prime is 9840552817. The next prime is 9840552847. The reversal of 9840552842 is 2482550489.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2482550489 = 61 ⋅40697549.

It can be written as a sum of positive squares in only one way, i.e., 6937390681 + 2903162161 = 83291^2 + 53881^2 .

It is not an unprimeable number, because it can be changed into a prime (9840552847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2460138209 + ... + 2460138212.

Almost surely, 2^9840552842 is an apocalyptic number.

9840552842 is a deficient number, since it is larger than the sum of its proper divisors (4920276424).

9840552842 is a wasteful number, since it uses less digits than its factorization.

9840552842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4920276423.

The product of its (nonzero) digits is 921600, while the sum is 47.

The square root of 9840552842 is about 99199.5606945918. The cubic root of 9840552842 is about 2142.9226699128.

The spelling of 9840552842 in words is "nine billion, eight hundred forty million, five hundred fifty-two thousand, eight hundred forty-two".