9042220 has 48 divisors (see below), whose sum is σ = 21627648. Its totient is φ = 3143360.

The previous prime is 9042179. The next prime is 9042221. The reversal of 9042220 is 222409.

It is a happy number.

9042220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (9042221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4167 + ... + 5953.

It is an arithmetic number, because the mean of its divisors is an integer number (450576).

Almost surely, 2^9042220 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 9042220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10813824).

9042220 is an abundant number, since it is smaller than the sum of its proper divisors (12585428).

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

9042220 is a wasteful number, since it uses less digits than its factorization.

9042220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830 (or 1828 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 9042220 is about 3007.0284335204. The cubic root of 9042220 is about 208.3331384887. Note that the first 3 decimals are identical.

Adding to 9042220 its reverse (222409), we get a palindrome (9264629).

The spelling of 9042220 in words is "nine million, forty-two thousand, two hundred twenty".