6042643781 has 2 divisors, whose sum is σ = 6042643782. Its totient is φ = 6042643780.

The previous prime is 6042643751. The next prime is 6042643807. The reversal of 6042643781 is 1873462406.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5678978881 + 363664900 = 75359^2 + 19070^2 .

It is a cyclic number.

It is not a de Polignac number, because 6042643781 - 2¹⁰ = 6042642757 is a prime.

It is a super-2 number, since 2×6042643781² = 73027087728115951922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6042643751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3021321890 + 3021321891.

It is an arithmetic number, because the mean of its divisors is an integer number (3021321891).

Almost surely, 2^6042643781 is an apocalyptic number.

It is an amenable number.

6042643781 is a deficient number, since it is larger than the sum of its proper divisors (1).

6042643781 is an equidigital number, since it uses as much as digits as its factorization.

6042643781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 6042643781 is about 77734.4439807734. The cubic root of 6042643781 is about 1821.4153725656.

The spelling of 6042643781 in words is "six billion, forty-two million, six hundred forty-three thousand, seven hundred eighty-one".