142243334 has 4 divisors (see below), whose sum is σ = 213365004. Its totient is φ = 71121666.

The previous prime is 142243333. The next prime is 142243349. The reversal of 142243334 is 433342241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 433342241 = 23 ⋅18840967.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142243333) by changing a digit.

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 as a sum of consecutive naturals, namely, 35560832 + ... + 35560835.

It is an arithmetic number, because the mean of its divisors is an integer number (53341251).

Almost surely, 2^142243334 is an apocalyptic number.

142243334 is a deficient number, since it is larger than the sum of its proper divisors (71121670).

142243334 is an equidigital number, since it uses as much as digits as its factorization.

142243334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71121669.

The product of its digits is 6912, while the sum is 26.

The square root of 142243334 is about 11926.5809853453. The cubic root of 142243334 is about 522.0081789454.

Adding to 142243334 its reverse (433342241), we get a palindrome (575585575).

The spelling of 142243334 in words is "one hundred forty-two million, two hundred forty-three thousand, three hundred thirty-four".