42721433412727 has 2 divisors, whose sum is σ = 42721433412728. Its totient is φ = 42721433412726.

The previous prime is 42721433412709. The next prime is 42721433412731. The reversal of 42721433412727 is 72721433412724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42721433412727 - 2⁷ = 42721433412599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42721433212727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21360716706363 + 21360716706364.

It is an arithmetic number, because the mean of its divisors is an integer number (21360716706364).

Almost surely, 2^{42721433412727} is an apocalyptic number.

42721433412727 is a deficient number, since it is larger than the sum of its proper divisors (1).

42721433412727 is an equidigital number, since it uses as much as digits as its factorization.

42721433412727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3161088, while the sum is 49.

The spelling of 42721433412727 in words is "forty-two trillion, seven hundred twenty-one billion, four hundred thirty-three million, four hundred twelve thousand, seven hundred twenty-seven".