9147142 has 4 divisors (see below), whose sum is σ = 13720716. Its totient is φ = 4573570.

The previous prime is 9147137. The next prime is 9147161. The reversal of 9147142 is 2417419.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 9147142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2286784 + ... + 2286787.

It is an arithmetic number, because the mean of its divisors is an integer number (3430179).

Almost surely, 2^9147142 is an apocalyptic number.

9147142 is a deficient number, since it is larger than the sum of its proper divisors (4573574).

9147142 is a wasteful number, since it uses less digits than its factorization.

9147142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4573573.

The product of its digits is 2016, while the sum is 28.

The square root of 9147142 is about 3024.4242427279. The cubic root of 9147142 is about 209.1358441661.

The spelling of 9147142 in words is "nine million, one hundred forty-seven thousand, one hundred forty-two".