42859853 has 2 divisors, whose sum is σ = 42859854. Its totient is φ = 42859852.

The previous prime is 42859849. The next prime is 42859891. The reversal of 42859853 is 35895824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30448324 + 12411529 = 5518^2 + 3523^2 .

It is a cyclic number.

It is not a de Polignac number, because 42859853 - 2² = 42859849 is a prime.

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 (42859823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21429926 + 21429927.

It is an arithmetic number, because the mean of its divisors is an integer number (21429927).

Almost surely, 2^42859853 is an apocalyptic number.

It is an amenable number.

42859853 is a deficient number, since it is larger than the sum of its proper divisors (1).

42859853 is an equidigital number, since it uses as much as digits as its factorization.

42859853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 44.

The square root of 42859853 is about 6546.7436943873. The cubic root of 42859853 is about 349.9587788188.

The spelling of 42859853 in words is "forty-two million, eight hundred fifty-nine thousand, eight hundred fifty-three".