9781104642 has 16 divisors (see below), whose sum is σ = 19563291072. Its totient is φ = 3260187920.

The previous prime is 9781104631. The next prime is 9781104647. The reversal of 9781104642 is 2464011879.

It is a super-3 number, since 3×9781104642³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9781104594 and 9781104603.

It is not an unprimeable number, because it can be changed into a prime (9781104647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117667 + ... + 182777.

It is an arithmetic number, because the mean of its divisors is an integer number (1222705692).

Almost surely, 2^9781104642 is an apocalyptic number.

9781104642 is an abundant number, since it is smaller than the sum of its proper divisors (9782186430).

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

9781104642 is a wasteful number, since it uses less digits than its factorization.

9781104642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90153.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 9781104642 is about 98899.4673494251. The cubic root of 9781104642 is about 2138.5987159329.

The spelling of 9781104642 in words is "nine billion, seven hundred eighty-one million, one hundred four thousand, six hundred forty-two".