42681833 has 2 divisors, whose sum is σ = 42681834. Its totient is φ = 42681832.

The previous prime is 42681827. The next prime is 42681851. The reversal of 42681833 is 33818624.

It is a happy number.

42681833 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23348224 + 19333609 = 4832^2 + 4397^2 .

It is a cyclic number.

It is not a de Polignac number, because 42681833 - 2⁴ = 42681817 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42681793 and 42681802.

It is not a weakly prime, because it can be changed into another prime (42681853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21340916 + 21340917.

It is an arithmetic number, because the mean of its divisors is an integer number (21340917).

Almost surely, 2^42681833 is an apocalyptic number.

It is an amenable number.

42681833 is a deficient number, since it is larger than the sum of its proper divisors (1).

42681833 is an equidigital number, since it uses as much as digits as its factorization.

42681833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 35.

The square root of 42681833 is about 6533.1334748343. The cubic root of 42681833 is about 349.4735841539.

The spelling of 42681833 in words is "forty-two million, six hundred eighty-one thousand, eight hundred thirty-three".