142111224 has 48 divisors (see below), whose sum is σ = 387277800. Its totient is φ = 47075904.

The previous prime is 142111213. The next prime is 142111231. The reversal of 142111224 is 422111241.

142111224 is digitally balanced in base 2, 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 nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 142111197 and 142111206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5682 + ... + 17790.

Almost surely, 2^142111224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142111224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193638900).

142111224 is an abundant number, since it is smaller than the sum of its proper divisors (245166576).

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

142111224 is a wasteful number, since it uses less digits than its factorization.

142111224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12284 (or 12277 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 142111224 is about 11921.0412296913. The cubic root of 142111224 is about 521.8465220168.

Adding to 142111224 its reverse (422111241), we get a palindrome (564222465).

The spelling of 142111224 in words is "one hundred forty-two million, one hundred eleven thousand, two hundred twenty-four".