9942420944 has 20 divisors (see below), whose sum is σ = 19626903396. Its totient is φ = 4877413632.

The previous prime is 9942420919. The next prime is 9942420949. The reversal of 9942420944 is 4490242499.

It can be written as a sum of positive squares in 2 ways, for example, as 4057690000 + 5884730944 = 63700^2 + 76712^2 .

It is a super-2 number, since 2×9942420944² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9942420949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5861429 + ... + 5863124.

Almost surely, 2^9942420944 is an apocalyptic number.

It is an amenable number.

9942420944 is a deficient number, since it is larger than the sum of its proper divisors (9684482452).

9942420944 is a wasteful number, since it uses less digits than its factorization.

9942420944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11724614 (or 11724608 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 47.

The square root of 9942420944 is about 99711.6891041366. The cubic root of 9942420944 is about 2150.2917176914.

The spelling of 9942420944 in words is "nine billion, nine hundred forty-two million, four hundred twenty thousand, nine hundred forty-four".