42710861 has 2 divisors, whose sum is σ = 42710862. Its totient is φ = 42710860.

The previous prime is 42710849. The next prime is 42710873. The reversal of 42710861 is 16801724.

It is a balanced prime because it is at equal distance from previous prime (42710849) and next prime (42710873).

It can be written as a sum of positive squares in only one way, i.e., 37393225 + 5317636 = 6115^2 + 2306^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42710861 is a prime.

It is a super-2 number, since 2×42710861² = 3648435294722642, 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 (42710821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21355430 + 21355431.

It is an arithmetic number, because the mean of its divisors is an integer number (21355431).

Almost surely, 2^42710861 is an apocalyptic number.

It is an amenable number.

42710861 is a deficient number, since it is larger than the sum of its proper divisors (1).

42710861 is an equidigital number, since it uses as much as digits as its factorization.

42710861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 42710861 is about 6535.3546958065. The cubic root of 42710861 is about 349.5527920946.

The spelling of 42710861 in words is "forty-two million, seven hundred ten thousand, eight hundred sixty-one".