9219142 has 32 divisors (see below), whose sum is σ = 15321600. Its totient is φ = 4144608.

The previous prime is 9219139. The next prime is 9219167. The reversal of 9219142 is 2419129.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 9219142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111033 + ... + 111115.

It is an arithmetic number, because the mean of its divisors is an integer number (478800).

Almost surely, 2^9219142 is an apocalyptic number.

9219142 is a deficient number, since it is larger than the sum of its proper divisors (6102458).

9219142 is a wasteful number, since it uses less digits than its factorization.

9219142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220.

The product of its digits is 1296, while the sum is 28.

The square root of 9219142 is about 3036.3040032250. The cubic root of 9219142 is about 209.6831351301.

The spelling of 9219142 in words is "nine million, two hundred nineteen thousand, one hundred forty-two".