142120042013434 has 8 divisors (see below), whose sum is σ = 213180792795540. Its totient is φ = 71059777748256.

The previous prime is 142120042013381. The next prime is 142120042013437. The reversal of 142120042013434 is 434310240021241.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 119659598843409 + 22460443170025 = 10938903^2 + 4739245^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 142120042013396 and 142120042013405.

It is not an unprimeable number, because it can be changed into a prime (142120042013437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120898059 + ... + 122067934.

Almost surely, 2^{142120042013434} is an apocalyptic number.

142120042013434 is a deficient number, since it is larger than the sum of its proper divisors (71060750782106).

142120042013434 is a wasteful number, since it uses less digits than its factorization.

142120042013434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243258464.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 142120042013434 its reverse (434310240021241), we get a palindrome (576430282034675).

The spelling of 142120042013434 in words is "one hundred forty-two trillion, one hundred twenty billion, forty-two million, thirteen thousand, four hundred thirty-four".