9942420916 has 6 divisors (see below), whose sum is σ = 17399236610. Its totient is φ = 4971210456.

The previous prime is 9942420883. The next prime is 9942420919. The reversal of 9942420916 is 6190242499.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8421732900 + 1520688016 = 91770^2 + 38996^2 .

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 polite number, since it can be written as a sum of consecutive naturals, namely, 1242802611 + ... + 1242802618.

Almost surely, 2^9942420916 is an apocalyptic number.

It is an amenable number.

9942420916 is a deficient number, since it is larger than the sum of its proper divisors (7456815694).

9942420916 is a wasteful number, since it uses less digits than its factorization.

9942420916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2485605233 (or 2485605231 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 9942420916 is about 99711.6889637318. The cubic root of 9942420916 is about 2150.2917156728.

The spelling of 9942420916 in words is "nine billion, nine hundred forty-two million, four hundred twenty thousand, nine hundred sixteen".