142244244 has 72 divisors (see below), whose sum is σ = 373621248. Its totient is φ = 45581760.

The previous prime is 142244239. The next prime is 142244251. The reversal of 142244244 is 442442241.

142244244 is a `hidden beast` number, since 14 + 224 + 424 + 4 = 666.

142244244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×142244244² = 40466849902263072, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 219529 + ... + 220175.

It is an arithmetic number, because the mean of its divisors is an integer number (5189184).

Almost surely, 2^142244244 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 142244244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186810624).

142244244 is an abundant number, since it is smaller than the sum of its proper divisors (231377004).

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

142244244 is a wasteful number, since it uses less digits than its factorization.

142244244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885 (or 880 counting only the distinct ones).

The product of its digits is 8192, while the sum is 27.

The square root of 142244244 is about 11926.6191353627. The cubic root of 142244244 is about 522.0092921233.

Adding to 142244244 its reverse (442442241), we get a palindrome (584686485).

The spelling of 142244244 in words is "one hundred forty-two million, two hundred forty-four thousand, two hundred forty-four".