42856727 has 2 divisors, whose sum is σ = 42856728. Its totient is φ = 42856726.

The previous prime is 42856691. The next prime is 42856741. The reversal of 42856727 is 72765824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42856727 - 2¹⁸ = 42594583 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42856757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21428363 + 21428364.

It is an arithmetic number, because the mean of its divisors is an integer number (21428364).

Almost surely, 2^42856727 is an apocalyptic number.

42856727 is a deficient number, since it is larger than the sum of its proper divisors (1).

42856727 is an equidigital number, since it uses as much as digits as its factorization.

42856727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 188160, while the sum is 41.

The square root of 42856727 is about 6546.5049453888. The cubic root of 42856727 is about 349.9502704856.

The spelling of 42856727 in words is "forty-two million, eight hundred fifty-six thousand, seven hundred twenty-seven".