142243134122 has 4 divisors (see below), whose sum is σ = 213364701186. Its totient is φ = 71121567060.

The previous prime is 142243134101. The next prime is 142243134127. The reversal of 142243134122 is 221431342241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 107676515881 + 34566618241 = 328141^2 + 185921^2 .

It is not an unprimeable number, because it can be changed into a prime (142243134127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35560783529 + ... + 35560783532.

Almost surely, 2^142243134122 is an apocalyptic number.

142243134122 is a deficient number, since it is larger than the sum of its proper divisors (71121567064).

142243134122 is an equidigital number, since it uses as much as digits as its factorization.

142243134122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71121567063.

The product of its digits is 9216, while the sum is 29.

Adding to 142243134122 its reverse (221431342241), we get a palindrome (363674476363).

The spelling of 142243134122 in words is "one hundred forty-two billion, two hundred forty-three million, one hundred thirty-four thousand, one hundred twenty-two".