8111142 has 48 divisors (see below), whose sum is σ = 20049120. Its totient is φ = 2347776.

The previous prime is 8111123. The next prime is 8111149. The reversal of 8111142 is 2411118.

8111142 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8111149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2959 + ... + 4997.

It is an arithmetic number, because the mean of its divisors is an integer number (417690).

Almost surely, 2^8111142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8111142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10024560).

8111142 is an abundant number, since it is smaller than the sum of its proper divisors (11937978).

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

8111142 is a wasteful number, since it uses less digits than its factorization.

8111142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2077 (or 2074 counting only the distinct ones).

The product of its digits is 64, while the sum is 18.

The square root of 8111142 is about 2848.0066713405. The cubic root of 8111142 is about 200.9219270559.

It can be divided in two parts, 811 and 1142, that added together give a triangular number (1953 = T₆₂).

The spelling of 8111142 in words is "eight million, one hundred eleven thousand, one hundred forty-two".