42847853 has 2 divisors, whose sum is σ = 42847854. Its totient is φ = 42847852.

The previous prime is 42847843. The next prime is 42847913. The reversal of 42847853 is 35874824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38775529 + 4072324 = 6227^2 + 2018^2 .

It is a cyclic number.

It is not a de Polignac number, because 42847853 - 2⁶ = 42847789 is a prime.

It is a super-4 number, since 4×42847853⁴ (a number of 32 digits) contains 4444 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42847853.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42847843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21423926 + 21423927.

It is an arithmetic number, because the mean of its divisors is an integer number (21423927).

Almost surely, 2^42847853 is an apocalyptic number.

It is an amenable number.

42847853 is a deficient number, since it is larger than the sum of its proper divisors (1).

42847853 is an equidigital number, since it uses as much as digits as its factorization.

42847853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 215040, while the sum is 41.

The square root of 42847853 is about 6545.8271440667. The cubic root of 42847853 is about 349.9261150162.

The spelling of 42847853 in words is "forty-two million, eight hundred forty-seven thousand, eight hundred fifty-three".