142543242 has 12 divisors (see below), whose sum is σ = 308843730. Its totient is φ = 47514408.

The previous prime is 142543229. The next prime is 142543253. The reversal of 142543242 is 242345241.

142543242 is digitally balanced in base 3, 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 only one way, i.e., 142348761 + 194481 = 11931^2 + 441^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3959517 + ... + 3959552.

Almost surely, 2^142543242 is an apocalyptic number.

142543242 is an abundant number, since it is smaller than the sum of its proper divisors (166300488).

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

142543242 is a wasteful number, since it uses less digits than its factorization.

142543242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7919077 (or 7919074 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 142543242 is about 11939.1474570004. The cubic root of 142543242 is about 522.3747913927.

Adding to 142543242 its reverse (242345241), we get a palindrome (384888483).

The spelling of 142543242 in words is "one hundred forty-two million, five hundred forty-three thousand, two hundred forty-two".