6242142306821 has 16 divisors (see below), whose sum is σ = 6591191443200. Its totient is φ = 5904319423680.

The previous prime is 6242142306733. The next prime is 6242142306839. The reversal of 6242142306821 is 1286032412426.

It is not a de Polignac number, because 6242142306821 - 2³⁴ = 6224962437637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6242142306871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11786195 + ... + 12304416.

It is an arithmetic number, because the mean of its divisors is an integer number (411949465200).

Almost surely, 2^{6242142306821} is an apocalyptic number.

It is an amenable number.

6242142306821 is a deficient number, since it is larger than the sum of its proper divisors (349049136379).

6242142306821 is a wasteful number, since it uses less digits than its factorization.

6242142306821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24090844.

The product of its (nonzero) digits is 221184, while the sum is 41.

The spelling of 6242142306821 in words is "six trillion, two hundred forty-two billion, one hundred forty-two million, three hundred six thousand, eight hundred twenty-one".