9942240 has 192 divisors, whose sum is σ = 39191040. Its totient is φ = 2058240.

The previous prime is 9942223. The next prime is 9942269. The reversal of 9942240 is 422499.

9942240 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 9942198 and 9942207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36826 + ... + 37094.

It is an arithmetic number, because the mean of its divisors is an integer number (204120).

Almost surely, 2^9942240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9942240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19595520).

9942240 is an abundant number, since it is smaller than the sum of its proper divisors (29248800).

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

9942240 is a wasteful number, since it uses less digits than its factorization.

9942240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 9942240 is about 3153.1317765041. The cubic root of 9942240 is about 215.0278673090.

It can be divided in two parts, 9 and 942240, that added together give a palindrome (942249).

The spelling of 9942240 in words is "nine million, nine hundred forty-two thousand, two hundred forty".