9942420917 has 12 divisors (see below), whose sum is σ = 11744787744. Its totient is φ = 8343288720.

The previous prime is 9942420883. The next prime is 9942420919. The reversal of 9942420917 is 7190242499.

9942420917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9942420917 - 2⁶ = 9942420853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9942420919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2672273 + ... + 2675990.

It is an arithmetic number, because the mean of its divisors is an integer number (978732312).

Almost surely, 2^9942420917 is an apocalyptic number.

It is an amenable number.

9942420917 is a deficient number, since it is larger than the sum of its proper divisors (1802366827).

9942420917 is a wasteful number, since it uses less digits than its factorization.

9942420917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5348300 (or 5348287 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 9942420917 is about 99711.6889687463. The cubic root of 9942420917 is about 2150.2917157449.

The spelling of 9942420917 in words is "nine billion, nine hundred forty-two million, four hundred twenty thousand, nine hundred seventeen".