8999142 has 8 divisors (see below), whose sum is σ = 17998296. Its totient is φ = 2999712.

The previous prime is 8999113. The next prime is 8999143. The reversal of 8999142 is 2419998.

It is a sphenic number, since it is the product of 3 distinct primes.

8999142 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 8999094 and 8999103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8999143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749923 + ... + 749934.

It is an arithmetic number, because the mean of its divisors is an integer number (2249787).

Almost surely, 2^8999142 is an apocalyptic number.

8999142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

8999142 is a wasteful number, since it uses less digits than its factorization.

8999142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499862.

The product of its digits is 46656, while the sum is 42.

The square root of 8999142 is about 2999.8569965917. The cubic root of 8999142 is about 208.0017720510.

The spelling of 8999142 in words is "eight million, nine hundred ninety-nine thousand, one hundred forty-two".