142444242 has 24 divisors (see below), whose sum is σ = 308920716. Its totient is φ = 47436576.

The previous prime is 142444213. The next prime is 142444249. The reversal of 142444242 is 242444241.

142444242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 142348761 + 95481 = 11931^2 + 309^2 .

It is not an unprimeable number, because it can be changed into a prime (142444249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19888 + ... + 26084.

Almost surely, 2^142444242 is an apocalyptic number.

142444242 is an abundant number, since it is smaller than the sum of its proper divisors (166476474).

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

142444242 is a wasteful number, since it uses less digits than its factorization.

142444242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7482 (or 7479 counting only the distinct ones).

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

The square root of 142444242 is about 11935.0007121910. Note that the first 3 decimals coincide. The cubic root of 142444242 is about 522.2538290781.

Adding to 142444242 its reverse (242444241), we get a palindrome (384888483).

Subtracting 142444242 from its reverse (242444241), we obtain a palindrome (99999999).

The spelling of 142444242 in words is "one hundred forty-two million, four hundred forty-four thousand, two hundred forty-two".