142120122134441 has 6 divisors (see below), whose sum is σ = 156214679701626. Its totient is φ = 129200111031200.

The previous prime is 142120122134437. The next prime is 142120122134449. The reversal of 142120122134441 is 144431221021241.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 137457545644441 + 4662576490000 = 11724229^2 + 2159300^2 .

It is not a de Polignac number, because 142120122134441 - 2² = 142120122134437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142120122134398 and 142120122134407.

It is not an unprimeable number, because it can be changed into a prime (142120122134449) 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 5 ways as a sum of consecutive naturals, for example, 587273231840 + ... + 587273232081.

It is an arithmetic number, because the mean of its divisors is an integer number (26035779950271).

Almost surely, 2^{142120122134441} is an apocalyptic number.

142120122134441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142120122134441 is a deficient number, since it is larger than the sum of its proper divisors (14094557567185).

142120122134441 is a wasteful number, since it uses less digits than its factorization.

142120122134441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174546463943 (or 1174546463932 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

Adding to 142120122134441 its reverse (144431221021241), we get a palindrome (286551343155682).

The spelling of 142120122134441 in words is "one hundred forty-two trillion, one hundred twenty billion, one hundred twenty-two million, one hundred thirty-four thousand, four hundred forty-one".