7138142546842 has 4 divisors (see below), whose sum is σ = 10707213820266. Its totient is φ = 3569071273420.

The previous prime is 7138142546813. The next prime is 7138142546879. The reversal of 7138142546842 is 2486452418317.

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., 6748455732841 + 389686814001 = 2597779^2 + 624249^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1784535636709 + ... + 1784535636712.

Almost surely, 2^{7138142546842} is an apocalyptic number.

7138142546842 is a deficient number, since it is larger than the sum of its proper divisors (3569071273424).

7138142546842 is a wasteful number, since it uses less digits than its factorization.

7138142546842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3569071273423.

The product of its digits is 10321920, while the sum is 55.

The spelling of 7138142546842 in words is "seven trillion, one hundred thirty-eight billion, one hundred forty-two million, five hundred forty-six thousand, eight hundred forty-two".