9142820 has 24 divisors (see below), whose sum is σ = 19489344. Its totient is φ = 3602016.

The previous prime is 9142813. The next prime is 9142831. The reversal of 9142820 is 282419.

It is a self number, because there is not a number n which added to its sum of digits gives 9142820.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2072 + ... + 4751.

It is an arithmetic number, because the mean of its divisors is an integer number (812056).

Almost surely, 2^9142820 is an apocalyptic number.

It is an amenable number.

9142820 is an abundant number, since it is smaller than the sum of its proper divisors (10346524).

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

9142820 is a wasteful number, since it uses less digits than its factorization.

9142820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6899 (or 6897 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 9142820 is about 3023.7096421449. The cubic root of 9142820 is about 209.1029002689.

The spelling of 9142820 in words is "nine million, one hundred forty-two thousand, eight hundred twenty".