42833729 has 2 divisors, whose sum is σ = 42833730. Its totient is φ = 42833728.

The previous prime is 42833701. The next prime is 42833731. The reversal of 42833729 is 92733824.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25000000 + 17833729 = 5000^2 + 4223^2 .

It is a cyclic number.

It is not a de Polignac number, because 42833729 - 2⁸ = 42833473 is a prime.

It is a Sophie Germain prime.

Together with 42833731, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42833692 and 42833701.

It is not a weakly prime, because it can be changed into another prime (42833789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21416864 + 21416865.

It is an arithmetic number, because the mean of its divisors is an integer number (21416865).

Almost surely, 2^42833729 is an apocalyptic number.

It is an amenable number.

42833729 is a deficient number, since it is larger than the sum of its proper divisors (1).

42833729 is an equidigital number, since it uses as much as digits as its factorization.

42833729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 38.

The square root of 42833729 is about 6544.7481998928. The cubic root of 42833729 is about 349.8876619063.

The spelling of 42833729 in words is "forty-two million, eight hundred thirty-three thousand, seven hundred twenty-nine".