142020042134 has 4 divisors (see below), whose sum is σ = 213030063204. Its totient is φ = 71010021066.

The previous prime is 142020042133. The next prime is 142020042163. The reversal of 142020042134 is 431240020241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 431240020241 = 107 ⋅4030280563.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142020042133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35505010532 + ... + 35505010535.

It is an arithmetic number, because the mean of its divisors is an integer number (53257515801).

Almost surely, 2^142020042134 is an apocalyptic number.

142020042134 is a deficient number, since it is larger than the sum of its proper divisors (71010021070).

142020042134 is an equidigital number, since it uses as much as digits as its factorization.

142020042134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71010021069.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 142020042134 its reverse (431240020241), we get a palindrome (573260062375).

The spelling of 142020042134 in words is "one hundred forty-two billion, twenty million, forty-two thousand, one hundred thirty-four".