9142224 has 180 divisors, whose sum is σ = 31042656. Its totient is φ = 2306304.

The previous prime is 9142207. The next prime is 9142229. The reversal of 9142224 is 4222419.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an Ulam number.

Its product of digits (1152) is a multiple of the sum of its prime divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 9142194 and 9142203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9142229) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 397477 + ... + 397499.

Almost surely, 2^9142224 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 9142224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15521328).

9142224 is an abundant number, since it is smaller than the sum of its proper divisors (21900432).

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

9142224 is a wasteful number, since it uses less digits than its factorization.

9142224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74 (or 48 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 9142224 is about 3023.6110861022. The cubic root of 9142224 is about 209.0983565200.

The spelling of 9142224 in words is "nine million, one hundred forty-two thousand, two hundred twenty-four".